IBIC2014 - List of Keywords (controls)

Paper	Title	Other Keywords	Page
MOCYB3	Longitudinal Laser Wire at SNS	laser, ion, background, electron	12
	A.P. Zhukov, A.V. Aleksandrov, Y. Liu ORNL, Oak Ridge, Tennessee, USA
	Funding: ORNL/SNS is managed by UT-Battelle, LLC, for the U.S. Department of Energy under contract DE-AC05-00OR22725. This paper describes a longitudinal H⁻ beam profile scanner that utilizes laser light to detach convoy electrons and an MCP to collect and measure these electrons. The scanner is located in MEBT with H⁻ energy of 2.5MeV and an RF frequency 402.5MHz. The picosecond pulsed laser runs at 80.5MHz in sync with the accelerator RF. The laser beam is delivered to the beam line through a 30m optical fiber. The pulse width after the fiber transmission measures about 10ps. Scanning the laser phase effectively allows measurements to move along ion bunch longitudinal position. We are able to reliably measure production beam bunch length with this method. The biggest problem we have encountered is background signal from electrons being stripped by vacuum. Several techniques of signal detection are discussed.
	Slides MOCYB3 [4.519 MB]
Export •	reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

MOCZB2	Reference Distribution and Synchronization System for SwissFEL: Concept and First Results	laser, timing, detector, LLRF	29
	S. Hunziker, V.R. Arsov, F. Buechi, M.G. Kaiser, A. Romann, V. Schlott PSI, Villigen PSI, Switzerland P. Orel, S. Zorzut I-Tech, Solkan, Slovenia
	The development of the reference distribution and synchronization system for SwissFEL is driven by ultra-high reference signal stability of SwissFEL LLRF-, beam arrival time monitors (BAM) and laser systems on one hand and cost issues, high reliability/availability and flexibility on the other. Key requirements are down to sub-10fs rms short term as well as sub-10fs peak-peak long term temporal stability for the most critical clients. The system essentially consists of an optical master oscillator with a fiber power amplifier and splitter, from which mutually phase locked optical reference pulses as well as RF reference signals are derived. The former are directly transmitted to the pulsed laser and BAM clients over group delay stabilized fiber-optic links whereas the latter are transmitted via newly developed group delay stabilized radio-over-fiber (RoF) links. Both s- and c-band reference signals use s-band RoF links, whereupon the c-band receiver incorporates an additional ultra-low drift frequency doubler. Furthermore, ultra-low jitter analog laser phase lock loops have been built and digital ones are under development. We will present concepts and first results of sub-10fs rms jitter and 20fs peak-peak long term drift subsystems, as e.g. RoF links, tested in the SwissFEL injector test facility.
	Slides MOCZB2 [2.372 MB]
Export •	reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

MOCZB3	Comparison of Feedback Controller for Link Stabilizing Units of the Laser Based Synchronisation System used at the European XFEL	laser, feedback, timing, electron	34
	M. Heuer, S. Pfeiffer, H. Schlarb DESY, Hamburg, Germany G. Lichtenberg HAW, Hamburg, Germany
	The European X-ray Free Electron Laser will allow scientists to perform experiments with an atomic scale resolution. To perform time resolved experiments at the end of the facility it is essential to provide a highly stable clock signal to all subsystems. The accuracy of this signal is extremely important since it defines limitations of precise measurement devices. A laser based synchronization system is used for the synchronization with an error in sub-femtosecond range. These light pulses are carried by an optical fiber and exposed to external disturbances which changes the optical length of the fiber. For that reason the up to 4 kilometer long fibers are actively stabilized using a controller implemented on the new MicroTCA Platform. Due to the high computation resources of this platform it is possible to attack the time delay of the link system with well known model based feedback control strategies. This contribution shows the design of a model based controller for such a system and compares the control performance of the previously used PID controller with advanced control algorithms at the currently installed laboratory setup.
	Slides MOCZB3 [4.973 MB]
Export •	reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

MOPF03	NSLSII Photon Beam Position Monitor ElectronicsTesting and Results	electronics, detector, photon, software	42
	A.J. Della Penna, M.A. Maggipinto, J. Mead, O. Singh, K. Vetter BNL, Upton, Long Island, New York, USA
	Simulated and real beam data has been taken using the new NSLSII Photon BPM electronics. The electrometer design can measure currents as low as 10’s of nanoamps and has an ability to measure a current as high as 300mA. The 4 channel design allows for internal calibration and has both a Negative and Positive bias ability. Preliminary bench testing results has shown excellent resolution.
Export •	reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

MOPF07	Construction and Operational Performance of a Horizontally Adjustable Beam Profile Monitor at NSLS-II	injection, storage-ring, septum, vacuum	55
	B.N. Kosciuk, A. Blednykh, S. Seletskiy BNL, Upton, Long Island, New York, USA
	The NSLS-II Synchrotron Light Source is a 3 GeV electron storage ring currently in the early stages of commissioning at Brookhaven National Laboratory. In order to observe the electron beam cross section in the injection region, a specially designed, horizontally adjustable beam profile monitor was installed at the downstream end of the injection septum. It allows the profiles of the injected, bumped and single turn beam to be viewed and measured. In this presentation, we discuss the final design, construction challenges, and operational performance of this novel device.
	Poster MOPF07 [0.953 MB]
Export •	reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

MOPF08	Beam Profile Measurements in the RHIC Electron Lens using a Pinhole Detector and YAG Screen	electron, software, detector, timing	59
	T.A. Miller, M.R. Costanzo, W. Fischer, B. Frak, D.M. Gassner, X. Gu, A.I. Pikin BNL, Upton, Long Island, New York, USA
	Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy The electron lenses installed in RHIC are equipped with two independent transverse beam profiling systems, namely the Pinhole Detector and YAG screen. A small Faraday cup, with a 0.2mm pinhole mask, intercepts the electron beam while a pre-programmed routine automatically raster scans the beam across the detector face. The collected charge is integrated, digitized and stored in an image type data file that represents the electron beam density. This plungeable detector shares space in the vacuum chamber with a plunging YAG:Ce crystal coated with aluminum. A view port at the downstream extremity of the Collector allows a GigE camera, fitted with a zoom lens, to image the crystal and digitize the profile of a beam pulse. Custom beam profiling software has been written to import both beam image files (pinhole and YAG) and fully characterize the transverse beam profile. The results of these profile measurements are presented here along with a description of the system and operational features. * W. Fischer, et al, "… head-on beam-beam compensation in RHIC", ICFA (BB3013), CERN (2013). **T. Miller, et al, “… eLens pin-hole detector and YAG…“, BIW2012, Newport News, VA, TUPG039
	Poster MOPF08 [6.731 MB]
Export •	reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

MOPF13	Wire Scanner Installation into the MicroTCA Environment for the European XFEL	detector, interface, timing, electronics	73
	T. Lensch, A. Delfs, V. Gharibyan, I. Krouptchenkov, D. Nölle, M. Pelzer, H. Tiessen, M. Werner, K. Wittenburg DESY, Hamburg, Germany
	The European XFEL (E-XFEL) is a 4th generation synchrotron radiation source currently under construction in Hamburg. The 17.5 GeV superconducting accelerator will provide photons simultaneously to several user stations []. For the transverse beam profile measurement in the high energy sections Wire Scanners are used as an essential part of the accelerator diagnostic system, providing the tool to measure small beam size in an almost nondestructive manner. The scanners will be operated in a fast mode, starting from a trigger the wire will be accelerated to 1 m/s and hitting about 100 bunches out of the long bunch train of E-XFEL within a single macropulse. Slow scans with single bunches are also possible. In the first stage 12 stations are planned to be equipped with Wire Scanners where each station consists of two motion units (horizontal and vertical plane). The new concept uses linear servo motors for the motion of the wires and a new mechanical design has been developed at DESY []. This paper describes the electronics developments for the motion part of these Wire Scanners and the integration into the MicroTCA environment. [] "XFEL Technical Design Report", DESY 2006-097, http://xfel.desy.de [**] "OVERVIEW ON E-XFEL STANDARD ELECTRON BEAM DIAGNOSTICS", D.Nölle, BIW 2010, Santa Fe
	Poster MOPF13 [1.760 MB]
Export •	reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

MOPF20	Diagnosing NSLS-II: A New Advanced Synchrotron Light Source	storage-ring, diagnostics, booster, linac	100
	Y. Hu, L.R. Dalesio, O. Singh, H. Xu BNL, Upton, Long Island, New York, USA
	NSLS-II, the successor to NSLS (National Synchrotron Light Source) at Brookhaven National Lab, is scheduled to be open to users worldwide by 2015 as a world-class advanced synchrotron light source because of its unique features: its half-mile-circumference (792 m) Storage Ring provides the highest beam intensity (500 mA) at medium-energy (3 GeV) with sub-nm-rad horizontal emittance (down to 0.5 nm -rad) and diffraction-limited vertical emittance at a wavelength of 1 Å (<8 pm-rad). As the eyes of NSLS-II accelerators to observe fascinating particle beams, beam diagnostics and controls systems are designed to monitor and diagnose the electron beam quality so that NSLS-II could be tuned up to reach its highest performance. The design and implementation of NSLS-II diagnostics and controls are described. Preliminary commissioning results of NSLS-II accelerators, including Linac, Booster, and Storage Ring, are presented.
	Poster MOPF20 [1.105 MB]
Export •	reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

MOPD04	Synchronisation of the LHC Betatron Coupling and Phase Advance Measurement System	timing, detector, FPGA, betatron	139
	J. Olexa, M. Gąsior CERN, Geneva, Switzerland
	The new LHC Diode ORbit and OScillation (DOROS) system will provide beam position readings with sub-micrometre resolution and at the same time will be able to perform measurements of local betatron coupling and beam phase advance with micrometre beam excitation. The oscillation sub-system employs gain-controlled RF amplifiers, shared with the orbit system, and followed by dedicated diode detectors to demodulate the beam oscillation signals into the kHz frequency range, subsequently digitized by multi-channel 24-bit ADCs. The digital signals are processed in each front-end with an FPGA and the results of reduced throughput are sent using an Ethernet protocol to a common concentrator, together with the orbit data. The phase advance calculation between multiple Beam Position Monitors (BPMs) requires that all DOROS front-ends have a common phase reference. This paper presents methods used to generate such a reference and to maintain a stable synchronous sampling on all system front-ends. The performance of the DOROS prototype synchronisation is presented based upon laboratory measurements.
Export •	reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

MOPD07	New MTCA.4-based Hardware Developments for the Control of the Optical Synchronization Systems at DESY	laser, timing, detector, LLRF	152
	M. Felber, M.K. Czwalinna, H.T. Duhme, M. Fenner, C. Gerth, M. Heuer, T. Lamb, U. Mavrič, J.M. Mueller, P. Peier, H. Schlarb, S. Schulz, B. Steffen, C. Sydlo, M. Titberidze, T. Walter, R. Wedel, F. Zummack DESY, Hamburg, Germany E. Janas Warsaw University of Technology, Institute of Electronic Systems, Warsaw, Poland T. Kozak, P. Prędki, K.P. Przygoda TUL-DMCS, Łódź, Poland J. Szewiński NCBJ, Świerk/Otwock, Poland
	Funding: This work has partly been funded by the Helmholtz Validation Fund Project MTCA.4 for Industry (HVF-0016) The optical synchronization group at DESY is operating and continuously enhancing their laser-based synchronization systems for various facilities which need femtosecond-stable timing. These include the free-electron lasers FLASH and the upcoming European XFEL as well as the electron diffraction machine REGAE and the plasma acceleration test facilities. One of the major upgrades under development is the migration of the entire electronic control hardware to the new MTCA.4 platform which was introduced as the new standard for accelerator control in many facilities worldwide. In this paper we present the applied modules and the topology of the new systems. Main advantages are a compact design with higher performance, redundancy, and remote management.
Export •	reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

MOPD18	ALS Timing System Upgrade	timing, embedded, booster, hardware	187
	J.M. Weber, C.A. Lionberger, W.E. Norum, G.J. Portmann, C. Serrano, E.C. Williams LBNL, Berkeley, California, USA
	The Advanced Light Source (ALS) is in the process of upgrading its timing system as a part of the ALS Instrumentation and Controls Upgrade project. The timing system built upon construction of the machine at the beginning of the 1990s is still in operation today, and a replacement of the machine timing system is under way based on a commercially available solution, benefiting from 20 years of improvements in the fields of digital electronics and optical communications. An overview of the new timing system architecture based on a Micro-Research Finland (MRF) solution is given here.
	Poster MOPD18 [1.235 MB]
Export •	reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

MOPD21	Bunch Pattern Measurement via Single Photon Counting at SPEAR3	timing, photon, injection, storage-ring	195
	W.J. Corbett, W.Y. Mok, K. Tian SLAC, Menlo Park, California, USA
	SPEAR3 is a 3GeV storage ring x-ray source that provides up to 500mA circulating beam current in top-up mode. Charge injection occurs on a 5 minute time schedule with the booster synchrotron delivering on-demand single-bunch pulses at 10Hz. In recent years the synchrotron radiation user program has moved in the direction of laser/x-ray pump-probe experiments which utilize a single timing ‘probe’ bunch isolated by 50ns dark space ahead and behind the bunch. In order to quantify bunch purity in adjacent buckets, a time-correlated single-photon counting system has been tested. By monitoring the bunch pattern, is it possible to evaluate when the x-ray probe bunch is sufficiently isolated, and pave the way for shot-by-shot charge injection that maintains all bunches at specified current levels.
	Poster MOPD21 [3.375 MB]
Export •	reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

TUPF01	NSLS-II RF Beam Position Monitor- System Test and Integration	site, storage-ring, hardware, status	289
	D. Padrazo, A. Caracappa, W.X. Cheng, C. Danneil, A.J. Della Penna, K. Ha, M.A. Maggipinto, J. Mead, O. Singh, K. Vetter BNL, Upton, Long Island, New York, USA
	The NSLS-II Synchrotron Light Source is a 3 GeV electron storage ring currently in the early stages of commissioning at Brookhaven National Laboratory. The RF Beam Position Monitors (RF BPM) are one of the key diagnostics systems required for a successful and efficient commissioning. There are more than 250 RF BPM installed in the injector and the storage ring. Each RF BPM was fully tested, first under laboratory environment and then after installation, utilizing built in pilot tone signal source. These successful tests provided a solid base for the integrity of RF BPM systems, prior to the start of beam commissioning. This paper will describe tests performed and results of system integration.
	Poster TUPF01 [1.068 MB]
Export •	reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

TUPF05	Production Process for the European XFEL Re-Entrant Cavity BPM	cavity, cryomodule, quadrupole, vacuum	307
	C.S. Simon, P. Carbonnier, P. Contrepois, F. Éozénou, Y. Gasser, O. Napoly, J. Novo, C. Servouin CEA/DSM/IRFU, France C. Boulch, Y. Gasser CEA/IRFU, Gif-sur-Yvette, France P. Daniel-Thomas, F. Gouit CEA, Gif-sur-Yvette, France J. Kruse, D. Nölle, M. Schalwat, S. Vilcins DESY, Hamburg, Germany N. Rouvière IPN, Orsay, France
	As In-Kind contributor to the E-XFEL project, CEA is committed to the procurement of around one third (31) cold beam position monitors (BPM) of the re-entrant RF cavities type and to the assembly on the Saclay site of the 101 cryomodules of the superconducting linac. Each cryomodule is equipped with a beam position monitor connected to a quadrupole at the high-energy end of the cavity string. The industrial process of those BPMs, used in an ultra-clean environment at cryogenic temperature, includes several steps and involves a quality control in collaboration with industrial partners. This paper describes the different steps of the re-entrant cavity BPM fabrication process: machining, copper coating, thermal treatment, EB welding, cleaning and mounting in clean room on the quadrupole. Problems encountered and the lessons learnt will be also reported.
Export •	reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

TUPF07	FLASH Undulator BPM Commissioning and Beam Characterization Results	electronics, undulator, cavity, pick-up	315
	D. Lipka, N. Baboi, D. Nölle, G. Petrosyan, S. Vilcins DESY, Hamburg, Germany R. Baldinger, R. Ditter, B. Keil, W. Koprek, R. Kramert, G. Marinkovic, M. Roggli, M. Stadler PSI, Villigen PSI, Switzerland
	Recently, the commissioning of FLASH2 has started, a new soft X-ray FEL undulator line at the DESY FLASH facility. In the FLASH2 undulator intersections, the beam positions are measured by 17 cavity beam position monitor (CBPM) pick-ups and electronics* developed for the European XFEL (E-XFEL). In addition four CBPMs are available at FLASH1 for test and development. The new CBPM system enables an unprecedented position and charge resolution at FLASH, thus allowing further analysis and optimization of the FLASH beam quality and overall accelerator performance. Results of first beam measurements as well as correlations with other FLASH diagnostics systems are reported. * M. Stadler et al., “Low-Q Cavity BPM Electronics for E-XFEL, FLASH-2 and SwissFEL”, this conference.
	Poster TUPF07 [1.112 MB]
Export •	reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

TUPD04	Third Generation Residual Gas Ionization Profile Monitors at Fermilab.	electron, detector, proton, ion	408
	J.R. Zagel, M.L. Alvarez, B.J. Fellenz, C.C. Jensen, C.E. Lundberg, E.S.M. McCrory, D. Slimmer, R.M. Thurman-Keup, D.G. Tinsley Fermilab, Batavia, Illinois, USA
	Funding: DOE The latest generation of IPM's installed in the Fermilab Main Injector and Recycler incorporate a 1 kG permanent magnet, a newly designed high-gain, rad-tolerant preamp, and a control grid to moderate the charge that is allowed to arrive on the anode pick-up strips. The control grid is intended to select a single Booster batch measurement per turn. Initially it is being used to allow for a faster turn-on of a single, high-intensity cycle in either machine. The expectation is that this will extend the Micro Channel Plate lifetime, which is the high-cost consumable in the measurement system. We discuss the new design and data acquired with this system.
	Poster TUPD04 [11.950 MB]
Export •	reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

TUPD06	CUPID: New System for Scintillating Screen Based Diagnostics	radiation, GUI, operation, instrumentation	417
	B. Walasek-Höhne, C. Andre, A. Bräuning-Demian, H. Bräuning, R. Haseitl, T. Hoffmann, R. Lonsing, A. Reiter, C. Schmidt, M. Schwickert GSI, Darmstadt, Germany
	The Facility for Antiproton and Ion Research (FAIR) poses new challenges for standard beam instrumentation like precise beam imaging over a wide range of beam parameters, radiation hardness, etc. A new, fully FAIR-conformal system for standard scintillating screen based beam diagnostics was developed at GSI. To cover a wide range of foreseen applications, a new technical solution was required for the upcoming FAIR High Energy Beam Transport lines and Rings. The newly developed system including digital image acquisition, remote controllable optical system and mechanical design, was set up and commissioned with beam. CUPID (Control Unit for Profile and Image Data) is based on the CERN Front-End Software Architecture (FESA) to control beam diagnostic devices. The FESA class for the digital GigE camera (IDS uEye UI-5240SE-M, CMOS type) acquires the images and pre-processes the optical data as required by the geometry of the setup (rotation, stretching). The performance of the system reaches more than 15 frames per second with one connected client. If desired, the raw image data can be written to a file for offline analysis. Additionally, dedicated FESA classes access industrial Programmable Logic Controllers (PLCs) for a reliable slow control solution using the CERN IEPLC library. Camera control, timing, as well as power supply and reset options for up to eight digital cameras are realized by the in-house developed Camera Power Supply controller CPS8. We report on first results with the novel system during routine beam operation. In addition, we describe first operating experiences with new radiation-hard camera (Thermo Fischer Scientific, CCIR MegaRAD3) installed at the SIS18 extraction point with high radiation level.
	Poster TUPD06 [8.374 MB]
Export •	reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

TUPD24	Installation of a Beam Loss Monitoring System at the S-DALINAC*	EPICS, radiation, electron, monitoring	468
	L.E. Jürgensen, U. Bonnes, C. Burandt, M. Fischer, F. Hug, T. Kürzeder, N. Pietralla, R. Stegmann, M. Steinhorst TU Darmstadt, Darmstadt, Germany
	Funding: *Work supported by the BMBF through 05K13RDA The S-DALINAC is the superconducting linear accelerator of the Institut für Kernphysik at Technische Universität Darmstadt. It delivers an electron beam with energies up to 130 MeV. In order to get a short-time response about occurring beam losses and their locations a new system was tested and installed. The setup is based on beam loss monitors of Bergoz company using two pin-diodes to record primary electrons as well as secondary radiation in a coincidence set-up. The readout is done using a self-developed system of a supply unit including differential line-drivers and fast counting cards compatible to our EPICS-based control system. We will report on the installation of the whole system and its first commissioning as well as on the future use of the system for experiments on threshold currents for transverse beam break up.
	Poster TUPD24 [1.661 MB]
Export •	reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

WEPF02	A Toroid Based Bunch Charge Monitor System with Machine Protection Features for FLASH and XFEL	timing, diagnostics, operation, FPGA	521
	M. Werner, T. Lensch, J. Lund-Nielsen, Re. Neumann, D. Nölle, N. Wentowski DESY, Hamburg, Germany
	For the superconducting linear accelerators FLASH and XFEL, a new toroid based charge measurement system has been designed as a standard diagnostic tool. It is also a sensor for the bunch charge stabilization feedback and for machine protection. The system is based on MTCA.4 technology and will offer a high dynamic range and high sensitivity. The machine protection features will cover recognition of poor transmission between adjacent toroid sensors, bunch pattern consistency checks, and protection of the beam dumps. The concept, an overview of the algorithms, and the implementation will be described. A summary of first operation experience at FLASH will be presented.
	Poster WEPF02 [1.113 MB]
Export •	reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

WEPF03	Upgrade of the Fast Beam Intensity Measurement System for the CERN PS Complex	shielding, proton, vacuum, synchrotron	525
	D. Belohrad, J.C.A. Allica, M. Andersen, W. Andreazza, G. Favre, N. Favre, L.K. Jensen, L. Lenardon, W. Vollenberg CERN, Geneva, Switzerland
	The CERN Proton Synchrotron complex (CPS) has been operational for over 50 years. During this time the Fast Beam Current Transformers (FBCTs) have only been repaired when they ceased to function, or individually modified to cope with new requests. This strategy resulted in a large variation of designs, making their maintenance difficult and limiting the precision with which comparisons could be made between transformers for the measurement of beam intensity transmission. During the first long shut-down of the CERN LHC and its injectors (LS1) these systems have undergone a major consolidation, with detectors and acquisition electronics upgraded to provide a uniform measurement system throughout the PS complex. This paper discusses the solutions used and analyses the first beam measurement results.
	Poster WEPF03 [7.547 MB]
Export •	reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

WEPF26	The Brookhaven LINAC Isotope Production Facility (BLIP) Raster Scanning Upgrade	target, laser, power-supply, radiation	608
	R.J. Michnoff, Z. Altinbas, P. Cerniglia, R. Connolly, C. Cullen, C. Degen, D.M. Gassner, R.L. Hulsart, R.F. Lambiase, L.F. Mausner, D. Raparia, P. Thieberger, M. Wilinski BNL, Upton, Long Island, New York, USA
	Brookhaven National Laboratory’s BLIP facility produces radioisotopes for the nuclear medicine community and industry, and performs research to develop new radioisotopes desired by nuclear medicine investigators. A raster scanning system is being installed to provide a better distribution of the H⁻ beam on the targets, allow higher beam intensities to be used, and ultimately increase production yield of the isotopes. The upgrade consists of horizontal and vertical dipole magnets sinusoidally driven at 5 kHz with 90 deg phase separation to produce a circular raster pattern, and a suite of new instrumentation devices to measure beam characteristics and allow adequate machine protection. The instrumentation systems include multi-wire profile monitors, a laser profile monitor, beam current transformers, and a beam position monitor. An overview of the upgrade and project status will be presented. Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy
	Poster WEPF26 [2.002 MB]
Export •	reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

WEPF28	Failure Mode and Effects Analysis of the Beam Intensity Control for the SPIRAL2 Accelerator	linac, proton, ion, diagnostics	613
	C. Jamet, T.A. Andre, B. Ducoudret, G. Ledu, S.L. Leloir, S. Loret, C. Potier de courcy GANIL, Caen, France
	The first phase of the SPIRAL2 project includes a driver and its associated new experimental areas (S3 and NFS caves). The accelerator, located in Caen (France), is based on a linear solution composed of a normal conducting RFQ and a superconducting linac. Intense primary stable beams (deuterons, protons, light and heavy ions) will be accelerated at various energies for nuclear physics. The beam intensity monitoring is a part of the operating range control of the facility. A high level of requirements is imposed on the intensity control system. In 2013, a failure mode and effects analysis (FMEA) was performed by a specialized company helped by the GANIL’s Electronic group. This paper presents the analysis and evolutions of the electronic chain of measurement and control.
	Poster WEPF28 [1.130 MB]
Export •	reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

WEPF29	Progress on the Beam Energy Monitor for the SPIRAL2 Accelerator.	pick-up, EPICS, interface, rfq	617
	W.LC. Le Coz, C. Jamet, G. Ledu, S. Loret, C. Potier de courcy, D.T. Touchard GANIL, Caen, France Y. Lussignol CEA/DSM/IRFU, France
	The first part of the SPIRAL2 project entered last year in the end of the construction phase at GANIL in France. The facility will be composed by an ion source, a deuteron/proton source, a RFQ and a superconducting linear accelerator. The driver is planned to accelerate high intensities, up to 5 mA and 40 MeV for the deuteron beams. A monitoring system was built to measure the beam energy on the BTI line (Bench of Intermediate Test) at the exit of the RFQ. As part of the MEBT commissioning, the beam energy will be measured on the BTI with an Epics monitoring application. At the exit of the LINAC, another system will have to measure and control the beam energy. The control consists in ensuring that the beam energy stays under a limit by taking account of the measurement uncertainty. The energy is measured by a method of time of flight; the signal is captured by non-intercepting capacitive pick-ups. This paper describes the BTI monitor interface and presents the system evolution following the design review.
	Poster WEPF29 [1.513 MB]
Export •	reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

WEPF30	Study of General Ion Recombination for Beam Monitor used in Particle Radiotherapy	ion, detector, cathode, factory	620
	R. Tansho, T. Furukawa, Y. Hara, K. Mizushima, K. Noda, N. S. Saotome, T. Shirai NIRS, Chiba-shi, Japan Y. Saraya National Institute of Radiological Sciences, Chiba, Japan
	Heavy ion particles such as carbon ion beams are effective tools for cancer radiotherapy because of the higher dose localization and biological effectiveness by using the characteristic dose distribution with the Bragg peak. In the particle radiotherapy, it is important to conform a dose distribution and deliver prescribed dose to a tumor. An ionization chamber is usually used as a beam monitor to control the prescribed dose to the target. Then new treatment research facility at National Institute of Radiological Science (NIRS) uses beam scanning irradiation system that make uniform dose distribution in the target volume by superposing dose deposit of an individual pencil beam. In order to increase dose concentration to the target and also decrease irradiation time, it is necessary to minimize the pencil beam size and to increase the beam intensity. As the result, the localization of the pencil beam with high intensity increases the number of general ion recombination in the beam monitor. Therefore, we need to predict the ion recombination rate in the beam monitor for accurate control of the dose. For our purpose, we developed calculation code to predict the ion recombination rate when the pencil beam scanning is used. The calculation code can divide a pencil beam into a sub region and calculate ion recombination rate in each sub region by using Boag theory. We present the calculation results compared with measurements for verification of our calculation code.
Export •	reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

WEPD07	Evaluation of Libera Single Pass H for ESS LINAC	linac, detector, instrumentation, operation	647
	M. Cargnelutti, M. Žnidarčič I-Tech, Solkan, Slovenia H. Hassanzadegan ESS, Lund, Sweden
	The Beam Position Monitor system of the ESS linac will include in total more than 140 BPM detectors of different sizes and types. The resolution and accuracy of the position measurement with the nominal 62.5 mA beam current and 2.86 ms pulse width need to be 20 ?m and 100 ?m respectively, and those of the phase measurement are 0.2 deg and 1 deg respectively. The BPM system also needs to work successfully under off-optimal conditions, ex. with a de-bunched beam, or with the current and pulse width being as low as 6 mA and 10 ?s respectively. Options for the implementation of the ESS BPM electronics include: 1) a custom or commercial front-end card combined with a commercial digitizer with in-house developed firmware and 2) a fully commercial off the shelf system. Libera Single Pass H is an instrument intended for phase, position and charge monitoring in hadron and heavy ion LINACs. The instrument was tested at the ESS laboratory, to probe the feasibility of operation with ESS beam conditions. To give a realistic picture of the device performance, different testing setups were evaluated, including all the signal and environment conditions foreseen for the final ESS linac operation. The results present resolution, precision and accuracy evaluations, as well as stressful long-term and stability tests. This paper presents the achieved results of the Libera Single Pass H for the ESS beam parameters.
	Poster WEPD07 [4.257 MB]
Export •	reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

WEPD12	Low-Q Cavity BPM Electronics for E-XFEL, FLASH-II and SwissFEL	cavity, electronics, undulator, pick-up	670
	M. Stadler, R. Baldinger, R. Ditter, B. Keil, F. Marcellini, G. Marinkovic, M. Roggli, M. Rohrer PSI, Villigen PSI, Switzerland D. Lipka, D. Nölle, S. Vilcins DESY, Hamburg, Germany
	PSI has developed BPM electronics for low-Q cavity BPMs that will be used in the E-XFEL and FLASH-II undulators, as well as in SwissFEL injector, linac and transfer lines. After beam tests at the SwissFEL test injector and FLASH, a pre-series of the electronics has been produced, tested and commissioned at FLASH-II [1]. The design, system features, signal processing techniques, lab-based test and calibration system as well as latest measurement results are reported.
Export •	reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

WEPD23	Commissioning of the ALBA Fast Orbit Feedback System	kicker, feedback, injection, FPGA	691
	A. Olmos, S. Blanch-Torné, G. Cuní, Z. Martí, J. Moldes, R. Petrocelli, S. Rubio-Manrique, X. Serra-Gallifa, D. Yépez ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
	The ALBA Fast Orbit FeedBack system (FOFB) started its commissioning phase in September 2013, when all the required hardware was installed and the development of different controls for the feedback started. This report shows our experience tuning the different parameters to setup the system, together with vibration and beam noise measurements at different conditions. Finally, the present results and future steps for this system are described.
	Poster WEPD23 [0.902 MB]
Export •	reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

WEPD25	Upgrade Development Progress for the CERN SPS High Bandwidth Transverse Feedback Demonstrator System	kicker, feedback, pick-up, timing	700
	J.E. Dusatko, J.M. Cesaratto, J.D. Fox, C.H. Rivetta SLAC, Menlo Park, California, USA S. De Santis LBNL, Berkeley, California, USA W. Höfle CERN, Geneva, Switzerland
	Funding: Work supported by the U.S. Department of Energy under contract DE-AC02-76SF00515 and the US LHC Accelerator Research Program (LARP) A high bandwidth feedback demonstrator system has been developed for proof of concept transverse intra-bunch closed loop feedback control studies at the CERN SPS. This system contains a beam pickup, analog front end receiver, signal processor, back end driver, power amplifiers and kicker structure. The main signal processing functions are performed digitally, using very fast (4GSa/s) data converters to bring the system signals into and out of the digital domain. The digital signal processing function is flexibly implemented in an FPGA allowing for maximum speed and reconfigurability for testing multiple control algorithms. The signal processor is a modular design consisting of commercial and custom components. This approach allowed for a rapidly-developed prototype to be delivered in a short time with limited resources. Initial beam studies at the SPS using the system prior to the CERN long shutdown one (LS1) have been very encouraging. We are planning several key upgrades to the system, including the signal processor. This paper describes these upgrades and reports on their progress.
	Poster WEPD25 [1.301 MB]
Export •	reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

MOCYB3

Longitudinal Laser Wire at SNS

laser, ion, background, electron

12

A.P. Zhukov, A.V. Aleksandrov, Y. Liu
ORNL, Oak Ridge, Tennessee, USA

Funding: ORNL/SNS is managed by UT-Battelle, LLC, for the U.S. Department of Energy under contract DE-AC05-00OR22725.
This paper describes a longitudinal H⁻ beam profile scanner that utilizes laser light to detach convoy electrons and an MCP to collect and measure these electrons. The scanner is located in MEBT with H⁻ energy of 2.5MeV and an RF frequency 402.5MHz. The picosecond pulsed laser runs at 80.5MHz in sync with the accelerator RF. The laser beam is delivered to the beam line through a 30m optical fiber. The pulse width after the fiber transmission measures about 10ps. Scanning the laser phase effectively allows measurements to move along ion bunch longitudinal position. We are able to reliably measure production beam bunch length with this method. The biggest problem we have encountered is background signal from electrons being stripped by vacuum. Several techniques of signal detection are discussed.

Slides MOCYB3 [4.519 MB]

Export •

reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

MOCZB2

Reference Distribution and Synchronization System for SwissFEL: Concept and First Results

laser, timing, detector, LLRF

29

S. Hunziker, V.R. Arsov, F. Buechi, M.G. Kaiser, A. Romann, V. Schlott
PSI, Villigen PSI, Switzerland
P. Orel, S. Zorzut
I-Tech, Solkan, Slovenia

The development of the reference distribution and synchronization system for SwissFEL is driven by ultra-high reference signal stability of SwissFEL LLRF-, beam arrival time monitors (BAM) and laser systems on one hand and cost issues, high reliability/availability and flexibility on the other. Key requirements are down to sub-10fs rms short term as well as sub-10fs peak-peak long term temporal stability for the most critical clients. The system essentially consists of an optical master oscillator with a fiber power amplifier and splitter, from which mutually phase locked optical reference pulses as well as RF reference signals are derived. The former are directly transmitted to the pulsed laser and BAM clients over group delay stabilized fiber-optic links whereas the latter are transmitted via newly developed group delay stabilized radio-over-fiber (RoF) links. Both s- and c-band reference signals use s-band RoF links, whereupon the c-band receiver incorporates an additional ultra-low drift frequency doubler. Furthermore, ultra-low jitter analog laser phase lock loops have been built and digital ones are under development. We will present concepts and first results of sub-10fs rms jitter and 20fs peak-peak long term drift subsystems, as e.g. RoF links, tested in the SwissFEL injector test facility.

Slides MOCZB2 [2.372 MB]

Export •

reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

MOCZB3

Comparison of Feedback Controller for Link Stabilizing Units of the Laser Based Synchronisation System used at the European XFEL

laser, feedback, timing, electron

34

M. Heuer, S. Pfeiffer, H. Schlarb
DESY, Hamburg, Germany
G. Lichtenberg
HAW, Hamburg, Germany

The European X-ray Free Electron Laser will allow scientists to perform experiments with an atomic scale resolution. To perform time resolved experiments at the end of the facility it is essential to provide a highly stable clock signal to all subsystems. The accuracy of this signal is extremely important since it defines limitations of precise measurement devices. A laser based synchronization system is used for the synchronization with an error in sub-femtosecond range. These light pulses are carried by an optical fiber and exposed to external disturbances which changes the optical length of the fiber. For that reason the up to 4 kilometer long fibers are actively stabilized using a controller implemented on the new MicroTCA Platform. Due to the high computation resources of this platform it is possible to attack the time delay of the link system with well known model based feedback control strategies. This contribution shows the design of a model based controller for such a system and compares the control performance of the previously used PID controller with advanced control algorithms at the currently installed laboratory setup.

Slides MOCZB3 [4.973 MB]

Export •

reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

MOPF03

NSLSII Photon Beam Position Monitor ElectronicsTesting and Results

electronics, detector, photon, software

42

A.J. Della Penna, M.A. Maggipinto, J. Mead, O. Singh, K. Vetter
BNL, Upton, Long Island, New York, USA

Simulated and real beam data has been taken using the new NSLSII Photon BPM electronics. The electrometer design can measure currents as low as 10’s of nanoamps and has an ability to measure a current as high as 300mA. The 4 channel design allows for internal calibration and has both a Negative and Positive bias ability. Preliminary bench testing results has shown excellent resolution.

Export •

reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

MOPF07

Construction and Operational Performance of a Horizontally Adjustable Beam Profile Monitor at NSLS-II

injection, storage-ring, septum, vacuum

55

B.N. Kosciuk, A. Blednykh, S. Seletskiy
BNL, Upton, Long Island, New York, USA

The NSLS-II Synchrotron Light Source is a 3 GeV electron storage ring currently in the early stages of commissioning at Brookhaven National Laboratory. In order to observe the electron beam cross section in the injection region, a specially designed, horizontally adjustable beam profile monitor was installed at the downstream end of the injection septum. It allows the profiles of the injected, bumped and single turn beam to be viewed and measured. In this presentation, we discuss the final design, construction challenges, and operational performance of this novel device.

Poster MOPF07 [0.953 MB]

Export •

reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

MOPF08

Beam Profile Measurements in the RHIC Electron Lens using a Pinhole Detector and YAG Screen

electron, software, detector, timing

59

T.A. Miller, M.R. Costanzo, W. Fischer, B. Frak, D.M. Gassner, X. Gu, A.I. Pikin
BNL, Upton, Long Island, New York, USA

Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy
The electron lenses installed in RHIC are equipped with two independent transverse beam profiling systems, namely the Pinhole Detector and YAG screen. A small Faraday cup, with a 0.2mm pinhole mask, intercepts the electron beam while a pre-programmed routine automatically raster scans the beam across the detector face. The collected charge is integrated, digitized and stored in an image type data file that represents the electron beam density. This plungeable detector shares space in the vacuum chamber with a plunging YAG:Ce crystal coated with aluminum. A view port at the downstream extremity of the Collector allows a GigE camera, fitted with a zoom lens, to image the crystal and digitize the profile of a beam pulse. Custom beam profiling software has been written to import both beam image files (pinhole and YAG) and fully characterize the transverse beam profile. The results of these profile measurements are presented here along with a description of the system and operational features.
* W. Fischer, et al, "… head-on beam-beam compensation in RHIC", ICFA (BB3013), CERN (2013).
**T. Miller, et al, “… eLens pin-hole detector and YAG…“, BIW2012, Newport News, VA, TUPG039

Poster MOPF08 [6.731 MB]

Export •

reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

MOPF13

Wire Scanner Installation into the MicroTCA Environment for the European XFEL

detector, interface, timing, electronics

73

T. Lensch, A. Delfs, V. Gharibyan, I. Krouptchenkov, D. Nölle, M. Pelzer, H. Tiessen, M. Werner, K. Wittenburg
DESY, Hamburg, Germany

The European XFEL (E-XFEL) is a 4th generation synchrotron radiation source currently under construction in Hamburg. The 17.5 GeV superconducting accelerator will provide photons simultaneously to several user stations [*]. For the transverse beam profile measurement in the high energy sections Wire Scanners are used as an essential part of the accelerator diagnostic system, providing the tool to measure small beam size in an almost nondestructive manner. The scanners will be operated in a fast mode, starting from a trigger the wire will be accelerated to 1 m/s and hitting about 100 bunches out of the long bunch train of E-XFEL within a single macropulse. Slow scans with single bunches are also possible. In the first stage 12 stations are planned to be equipped with Wire Scanners where each station consists of two motion units (horizontal and vertical plane). The new concept uses linear servo motors for the motion of the wires and a new mechanical design has been developed at DESY [**]. This paper describes the electronics developments for the motion part of these Wire Scanners and the integration into the MicroTCA environment.
[*] "XFEL Technical Design Report", DESY 2006-097, http://xfel.desy.de
[**] "OVERVIEW ON E-XFEL STANDARD ELECTRON BEAM DIAGNOSTICS", D.Nölle, BIW 2010, Santa Fe

Poster MOPF13 [1.760 MB]

Export •

reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

MOPF20

Diagnosing NSLS-II: A New Advanced Synchrotron Light Source

storage-ring, diagnostics, booster, linac

100

Y. Hu, L.R. Dalesio, O. Singh, H. Xu
BNL, Upton, Long Island, New York, USA

NSLS-II, the successor to NSLS (National Synchrotron Light Source) at Brookhaven National Lab, is scheduled to be open to users worldwide by 2015 as a world-class advanced synchrotron light source because of its unique features: its half-mile-circumference (792 m) Storage Ring provides the highest beam intensity (500 mA) at medium-energy (3 GeV) with sub-nm-rad horizontal emittance (down to 0.5 nm -rad) and diffraction-limited vertical emittance at a wavelength of 1 Å (<8 pm-rad). As the eyes of NSLS-II accelerators to observe fascinating particle beams, beam diagnostics and controls systems are designed to monitor and diagnose the electron beam quality so that NSLS-II could be tuned up to reach its highest performance. The design and implementation of NSLS-II diagnostics and controls are described. Preliminary commissioning results of NSLS-II accelerators, including Linac, Booster, and Storage Ring, are presented.

Poster MOPF20 [1.105 MB]

Export •

reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

MOPD04

Synchronisation of the LHC Betatron Coupling and Phase Advance Measurement System

timing, detector, FPGA, betatron

139

J. Olexa, M. Gąsior
CERN, Geneva, Switzerland

The new LHC Diode ORbit and OScillation (DOROS) system will provide beam position readings with sub-micrometre resolution and at the same time will be able to perform measurements of local betatron coupling and beam phase advance with micrometre beam excitation. The oscillation sub-system employs gain-controlled RF amplifiers, shared with the orbit system, and followed by dedicated diode detectors to demodulate the beam oscillation signals into the kHz frequency range, subsequently digitized by multi-channel 24-bit ADCs. The digital signals are processed in each front-end with an FPGA and the results of reduced throughput are sent using an Ethernet protocol to a common concentrator, together with the orbit data. The phase advance calculation between multiple Beam Position Monitors (BPMs) requires that all DOROS front-ends have a common phase reference. This paper presents methods used to generate such a reference and to maintain a stable synchronous sampling on all system front-ends. The performance of the DOROS prototype synchronisation is presented based upon laboratory measurements.

Export •

reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

MOPD07

New MTCA.4-based Hardware Developments for the Control of the Optical Synchronization Systems at DESY

laser, timing, detector, LLRF

152

M. Felber, M.K. Czwalinna, H.T. Duhme, M. Fenner, C. Gerth, M. Heuer, T. Lamb, U. Mavrič, J.M. Mueller, P. Peier, H. Schlarb, S. Schulz, B. Steffen, C. Sydlo, M. Titberidze, T. Walter, R. Wedel, F. Zummack
DESY, Hamburg, Germany
E. Janas
Warsaw University of Technology, Institute of Electronic Systems, Warsaw, Poland
T. Kozak, P. Prędki, K.P. Przygoda
TUL-DMCS, Łódź, Poland
J. Szewiński
NCBJ, Świerk/Otwock, Poland

Funding: This work has partly been funded by the Helmholtz Validation Fund Project MTCA.4 for Industry (HVF-0016)
The optical synchronization group at DESY is operating and continuously enhancing their laser-based synchronization systems for various facilities which need femtosecond-stable timing. These include the free-electron lasers FLASH and the upcoming European XFEL as well as the electron diffraction machine REGAE and the plasma acceleration test facilities. One of the major upgrades under development is the migration of the entire electronic control hardware to the new MTCA.4 platform which was introduced as the new standard for accelerator control in many facilities worldwide. In this paper we present the applied modules and the topology of the new systems. Main advantages are a compact design with higher performance, redundancy, and remote management.

Export •

reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

MOPD18

ALS Timing System Upgrade

timing, embedded, booster, hardware

187

J.M. Weber, C.A. Lionberger, W.E. Norum, G.J. Portmann, C. Serrano, E.C. Williams
LBNL, Berkeley, California, USA

The Advanced Light Source (ALS) is in the process of upgrading its timing system as a part of the ALS Instrumentation and Controls Upgrade project. The timing system built upon construction of the machine at the beginning of the 1990s is still in operation today, and a replacement of the machine timing system is under way based on a commercially available solution, benefiting from 20 years of improvements in the fields of digital electronics and optical communications. An overview of the new timing system architecture based on a Micro-Research Finland (MRF) solution is given here.

Poster MOPD18 [1.235 MB]

Export •

reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

MOPD21

Bunch Pattern Measurement via Single Photon Counting at SPEAR3

timing, photon, injection, storage-ring

195

W.J. Corbett, W.Y. Mok, K. Tian
SLAC, Menlo Park, California, USA

SPEAR3 is a 3GeV storage ring x-ray source that provides up to 500mA circulating beam current in top-up mode. Charge injection occurs on a 5 minute time schedule with the booster synchrotron delivering on-demand single-bunch pulses at 10Hz. In recent years the synchrotron radiation user program has moved in the direction of laser/x-ray pump-probe experiments which utilize a single timing ‘probe’ bunch isolated by 50ns dark space ahead and behind the bunch. In order to quantify bunch purity in adjacent buckets, a time-correlated single-photon counting system has been tested. By monitoring the bunch pattern, is it possible to evaluate when the x-ray probe bunch is sufficiently isolated, and pave the way for shot-by-shot charge injection that maintains all bunches at specified current levels.

Poster MOPD21 [3.375 MB]

Export •

reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

TUPF01

NSLS-II RF Beam Position Monitor- System Test and Integration

site, storage-ring, hardware, status

289

D. Padrazo, A. Caracappa, W.X. Cheng, C. Danneil, A.J. Della Penna, K. Ha, M.A. Maggipinto, J. Mead, O. Singh, K. Vetter
BNL, Upton, Long Island, New York, USA

The NSLS-II Synchrotron Light Source is a 3 GeV electron storage ring currently in the early stages of commissioning at Brookhaven National Laboratory. The RF Beam Position Monitors (RF BPM) are one of the key diagnostics systems required for a successful and efficient commissioning. There are more than 250 RF BPM installed in the injector and the storage ring. Each RF BPM was fully tested, first under laboratory environment and then after installation, utilizing built in pilot tone signal source. These successful tests provided a solid base for the integrity of RF BPM systems, prior to the start of beam commissioning. This paper will describe tests performed and results of system integration.

Poster TUPF01 [1.068 MB]

Export •

reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

TUPF05

Production Process for the European XFEL Re-Entrant Cavity BPM

cavity, cryomodule, quadrupole, vacuum

307

C.S. Simon, P. Carbonnier, P. Contrepois, F. Éozénou, Y. Gasser, O. Napoly, J. Novo, C. Servouin
CEA/DSM/IRFU, France
C. Boulch, Y. Gasser
CEA/IRFU, Gif-sur-Yvette, France
P. Daniel-Thomas, F. Gouit
CEA, Gif-sur-Yvette, France
J. Kruse, D. Nölle, M. Schalwat, S. Vilcins
DESY, Hamburg, Germany
N. Rouvière
IPN, Orsay, France

As In-Kind contributor to the E-XFEL project, CEA is committed to the procurement of around one third (31) cold beam position monitors (BPM) of the re-entrant RF cavities type and to the assembly on the Saclay site of the 101 cryomodules of the superconducting linac. Each cryomodule is equipped with a beam position monitor connected to a quadrupole at the high-energy end of the cavity string. The industrial process of those BPMs, used in an ultra-clean environment at cryogenic temperature, includes several steps and involves a quality control in collaboration with industrial partners. This paper describes the different steps of the re-entrant cavity BPM fabrication process: machining, copper coating, thermal treatment, EB welding, cleaning and mounting in clean room on the quadrupole. Problems encountered and the lessons learnt will be also reported.

Export •

reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

TUPF07

FLASH Undulator BPM Commissioning and Beam Characterization Results

electronics, undulator, cavity, pick-up

315

D. Lipka, N. Baboi, D. Nölle, G. Petrosyan, S. Vilcins
DESY, Hamburg, Germany
R. Baldinger, R. Ditter, B. Keil, W. Koprek, R. Kramert, G. Marinkovic, M. Roggli, M. Stadler
PSI, Villigen PSI, Switzerland

Recently, the commissioning of FLASH2 has started, a new soft X-ray FEL undulator line at the DESY FLASH facility. In the FLASH2 undulator intersections, the beam positions are measured by 17 cavity beam position monitor (CBPM) pick-ups and electronics* developed for the European XFEL (E-XFEL). In addition four CBPMs are available at FLASH1 for test and development. The new CBPM system enables an unprecedented position and charge resolution at FLASH, thus allowing further analysis and optimization of the FLASH beam quality and overall accelerator performance. Results of first beam measurements as well as correlations with other FLASH diagnostics systems are reported.
* M. Stadler et al., “Low-Q Cavity BPM Electronics for E-XFEL, FLASH-2 and SwissFEL”, this conference.

Poster TUPF07 [1.112 MB]

Export •

reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

TUPD04

Third Generation Residual Gas Ionization Profile Monitors at Fermilab.

electron, detector, proton, ion

408

J.R. Zagel, M.L. Alvarez, B.J. Fellenz, C.C. Jensen, C.E. Lundberg, E.S.M. McCrory, D. Slimmer, R.M. Thurman-Keup, D.G. Tinsley
Fermilab, Batavia, Illinois, USA

Funding: DOE
The latest generation of IPM's installed in the Fermilab Main Injector and Recycler incorporate a 1 kG permanent magnet, a newly designed high-gain, rad-tolerant preamp, and a control grid to moderate the charge that is allowed to arrive on the anode pick-up strips. The control grid is intended to select a single Booster batch measurement per turn. Initially it is being used to allow for a faster turn-on of a single, high-intensity cycle in either machine. The expectation is that this will extend the Micro Channel Plate lifetime, which is the high-cost consumable in the measurement system. We discuss the new design and data acquired with this system.

Poster TUPD04 [11.950 MB]

Export •

reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

TUPD06

CUPID: New System for Scintillating Screen Based Diagnostics

radiation, GUI, operation, instrumentation

417

B. Walasek-Höhne, C. Andre, A. Bräuning-Demian, H. Bräuning, R. Haseitl, T. Hoffmann, R. Lonsing, A. Reiter, C. Schmidt, M. Schwickert
GSI, Darmstadt, Germany

The Facility for Antiproton and Ion Research (FAIR) poses new challenges for standard beam instrumentation like precise beam imaging over a wide range of beam parameters, radiation hardness, etc. A new, fully FAIR-conformal system for standard scintillating screen based beam diagnostics was developed at GSI. To cover a wide range of foreseen applications, a new technical solution was required for the upcoming FAIR High Energy Beam Transport lines and Rings. The newly developed system including digital image acquisition, remote controllable optical system and mechanical design, was set up and commissioned with beam. CUPID (Control Unit for Profile and Image Data) is based on the CERN Front-End Software Architecture (FESA) to control beam diagnostic devices. The FESA class for the digital GigE camera (IDS uEye UI-5240SE-M, CMOS type) acquires the images and pre-processes the optical data as required by the geometry of the setup (rotation, stretching). The performance of the system reaches more than 15 frames per second with one connected client. If desired, the raw image data can be written to a file for offline analysis. Additionally, dedicated FESA classes access industrial Programmable Logic Controllers (PLCs) for a reliable slow control solution using the CERN IEPLC library. Camera control, timing, as well as power supply and reset options for up to eight digital cameras are realized by the in-house developed Camera Power Supply controller CPS8. We report on first results with the novel system during routine beam operation. In addition, we describe first operating experiences with new radiation-hard camera (Thermo Fischer Scientific, CCIR MegaRAD3) installed at the SIS18 extraction point with high radiation level.

Poster TUPD06 [8.374 MB]

Export •

reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

TUPD24

Installation of a Beam Loss Monitoring System at the S-DALINAC*

EPICS, radiation, electron, monitoring

468

L.E. Jürgensen, U. Bonnes, C. Burandt, M. Fischer, F. Hug, T. Kürzeder, N. Pietralla, R. Stegmann, M. Steinhorst
TU Darmstadt, Darmstadt, Germany

Funding: *Work supported by the BMBF through 05K13RDA
The S-DALINAC is the superconducting linear accelerator of the Institut für Kernphysik at Technische Universität Darmstadt. It delivers an electron beam with energies up to 130 MeV. In order to get a short-time response about occurring beam losses and their locations a new system was tested and installed. The setup is based on beam loss monitors of Bergoz company using two pin-diodes to record primary electrons as well as secondary radiation in a coincidence set-up. The readout is done using a self-developed system of a supply unit including differential line-drivers and fast counting cards compatible to our EPICS-based control system. We will report on the installation of the whole system and its first commissioning as well as on the future use of the system for experiments on threshold currents for transverse beam break up.

Poster TUPD24 [1.661 MB]

Export •

reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

WEPF02

A Toroid Based Bunch Charge Monitor System with Machine Protection Features for FLASH and XFEL

timing, diagnostics, operation, FPGA

521

M. Werner, T. Lensch, J. Lund-Nielsen, Re. Neumann, D. Nölle, N. Wentowski
DESY, Hamburg, Germany

For the superconducting linear accelerators FLASH and XFEL, a new toroid based charge measurement system has been designed as a standard diagnostic tool. It is also a sensor for the bunch charge stabilization feedback and for machine protection. The system is based on MTCA.4 technology and will offer a high dynamic range and high sensitivity. The machine protection features will cover recognition of poor transmission between adjacent toroid sensors, bunch pattern consistency checks, and protection of the beam dumps. The concept, an overview of the algorithms, and the implementation will be described. A summary of first operation experience at FLASH will be presented.

Poster WEPF02 [1.113 MB]

Export •

reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

WEPF03

Upgrade of the Fast Beam Intensity Measurement System for the CERN PS Complex

shielding, proton, vacuum, synchrotron

525

D. Belohrad, J.C.A. Allica, M. Andersen, W. Andreazza, G. Favre, N. Favre, L.K. Jensen, L. Lenardon, W. Vollenberg
CERN, Geneva, Switzerland

The CERN Proton Synchrotron complex (CPS) has been operational for over 50 years. During this time the Fast Beam Current Transformers (FBCTs) have only been repaired when they ceased to function, or individually modified to cope with new requests. This strategy resulted in a large variation of designs, making their maintenance difficult and limiting the precision with which comparisons could be made between transformers for the measurement of beam intensity transmission. During the first long shut-down of the CERN LHC and its injectors (LS1) these systems have undergone a major consolidation, with detectors and acquisition electronics upgraded to provide a uniform measurement system throughout the PS complex. This paper discusses the solutions used and analyses the first beam measurement results.

Poster WEPF03 [7.547 MB]

Export •

reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

WEPF26

The Brookhaven LINAC Isotope Production Facility (BLIP) Raster Scanning Upgrade

target, laser, power-supply, radiation

608

R.J. Michnoff, Z. Altinbas, P. Cerniglia, R. Connolly, C. Cullen, C. Degen, D.M. Gassner, R.L. Hulsart, R.F. Lambiase, L.F. Mausner, D. Raparia, P. Thieberger, M. Wilinski
BNL, Upton, Long Island, New York, USA

Brookhaven National Laboratory’s BLIP facility produces radioisotopes for the nuclear medicine community and industry, and performs research to develop new radioisotopes desired by nuclear medicine investigators. A raster scanning system is being installed to provide a better distribution of the H⁻ beam on the targets, allow higher beam intensities to be used, and ultimately increase production yield of the isotopes. The upgrade consists of horizontal and vertical dipole magnets sinusoidally driven at 5 kHz with 90 deg phase separation to produce a circular raster pattern, and a suite of new instrumentation devices to measure beam characteristics and allow adequate machine protection. The instrumentation systems include multi-wire profile monitors, a laser profile monitor, beam current transformers, and a beam position monitor. An overview of the upgrade and project status will be presented.
Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy

Poster WEPF26 [2.002 MB]

Export •

reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

WEPF28

Failure Mode and Effects Analysis of the Beam Intensity Control for the SPIRAL2 Accelerator

linac, proton, ion, diagnostics

613

C. Jamet, T.A. Andre, B. Ducoudret, G. Ledu, S.L. Leloir, S. Loret, C. Potier de courcy
GANIL, Caen, France

The first phase of the SPIRAL2 project includes a driver and its associated new experimental areas (S3 and NFS caves). The accelerator, located in Caen (France), is based on a linear solution composed of a normal conducting RFQ and a superconducting linac. Intense primary stable beams (deuterons, protons, light and heavy ions) will be accelerated at various energies for nuclear physics. The beam intensity monitoring is a part of the operating range control of the facility. A high level of requirements is imposed on the intensity control system. In 2013, a failure mode and effects analysis (FMEA) was performed by a specialized company helped by the GANIL’s Electronic group. This paper presents the analysis and evolutions of the electronic chain of measurement and control.

Poster WEPF28 [1.130 MB]

Export •

reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

WEPF29

Progress on the Beam Energy Monitor for the SPIRAL2 Accelerator.

pick-up, EPICS, interface, rfq

617

W.LC. Le Coz, C. Jamet, G. Ledu, S. Loret, C. Potier de courcy, D.T. Touchard
GANIL, Caen, France
Y. Lussignol
CEA/DSM/IRFU, France

The first part of the SPIRAL2 project entered last year in the end of the construction phase at GANIL in France. The facility will be composed by an ion source, a deuteron/proton source, a RFQ and a superconducting linear accelerator. The driver is planned to accelerate high intensities, up to 5 mA and 40 MeV for the deuteron beams. A monitoring system was built to measure the beam energy on the BTI line (Bench of Intermediate Test) at the exit of the RFQ. As part of the MEBT commissioning, the beam energy will be measured on the BTI with an Epics monitoring application. At the exit of the LINAC, another system will have to measure and control the beam energy. The control consists in ensuring that the beam energy stays under a limit by taking account of the measurement uncertainty. The energy is measured by a method of time of flight; the signal is captured by non-intercepting capacitive pick-ups. This paper describes the BTI monitor interface and presents the system evolution following the design review.

Poster WEPF29 [1.513 MB]

Export •

reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

WEPF30

Study of General Ion Recombination for Beam Monitor used in Particle Radiotherapy

ion, detector, cathode, factory

620

R. Tansho, T. Furukawa, Y. Hara, K. Mizushima, K. Noda, N. S. Saotome, T. Shirai
NIRS, Chiba-shi, Japan
Y. Saraya
National Institute of Radiological Sciences, Chiba, Japan

Heavy ion particles such as carbon ion beams are effective tools for cancer radiotherapy because of the higher dose localization and biological effectiveness by using the characteristic dose distribution with the Bragg peak. In the particle radiotherapy, it is important to conform a dose distribution and deliver prescribed dose to a tumor. An ionization chamber is usually used as a beam monitor to control the prescribed dose to the target. Then new treatment research facility at National Institute of Radiological Science (NIRS) uses beam scanning irradiation system that make uniform dose distribution in the target volume by superposing dose deposit of an individual pencil beam. In order to increase dose concentration to the target and also decrease irradiation time, it is necessary to minimize the pencil beam size and to increase the beam intensity. As the result, the localization of the pencil beam with high intensity increases the number of general ion recombination in the beam monitor. Therefore, we need to predict the ion recombination rate in the beam monitor for accurate control of the dose. For our purpose, we developed calculation code to predict the ion recombination rate when the pencil beam scanning is used. The calculation code can divide a pencil beam into a sub region and calculate ion recombination rate in each sub region by using Boag theory. We present the calculation results compared with measurements for verification of our calculation code.

Export •

reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

WEPD07

Evaluation of Libera Single Pass H for ESS LINAC

linac, detector, instrumentation, operation

647

M. Cargnelutti, M. Žnidarčič
I-Tech, Solkan, Slovenia
H. Hassanzadegan
ESS, Lund, Sweden

The Beam Position Monitor system of the ESS linac will include in total more than 140 BPM detectors of different sizes and types. The resolution and accuracy of the position measurement with the nominal 62.5 mA beam current and 2.86 ms pulse width need to be 20 ?m and 100 ?m respectively, and those of the phase measurement are 0.2 deg and 1 deg respectively. The BPM system also needs to work successfully under off-optimal conditions, ex. with a de-bunched beam, or with the current and pulse width being as low as 6 mA and 10 ?s respectively. Options for the implementation of the ESS BPM electronics include: 1) a custom or commercial front-end card combined with a commercial digitizer with in-house developed firmware and 2) a fully commercial off the shelf system. Libera Single Pass H is an instrument intended for phase, position and charge monitoring in hadron and heavy ion LINACs. The instrument was tested at the ESS laboratory, to probe the feasibility of operation with ESS beam conditions. To give a realistic picture of the device performance, different testing setups were evaluated, including all the signal and environment conditions foreseen for the final ESS linac operation. The results present resolution, precision and accuracy evaluations, as well as stressful long-term and stability tests. This paper presents the achieved results of the Libera Single Pass H for the ESS beam parameters.

Poster WEPD07 [4.257 MB]

Export •

reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

WEPD12

Low-Q Cavity BPM Electronics for E-XFEL, FLASH-II and SwissFEL

cavity, electronics, undulator, pick-up

670

M. Stadler, R. Baldinger, R. Ditter, B. Keil, F. Marcellini, G. Marinkovic, M. Roggli, M. Rohrer
PSI, Villigen PSI, Switzerland
D. Lipka, D. Nölle, S. Vilcins
DESY, Hamburg, Germany

PSI has developed BPM electronics for low-Q cavity BPMs that will be used in the E-XFEL and FLASH-II undulators, as well as in SwissFEL injector, linac and transfer lines. After beam tests at the SwissFEL test injector and FLASH, a pre-series of the electronics has been produced, tested and commissioned at FLASH-II [1]. The design, system features, signal processing techniques, lab-based test and calibration system as well as latest measurement results are reported.

Export •

reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

WEPD23

Commissioning of the ALBA Fast Orbit Feedback System

kicker, feedback, injection, FPGA

691

A. Olmos, S. Blanch-Torné, G. Cuní, Z. Martí, J. Moldes, R. Petrocelli, S. Rubio-Manrique, X. Serra-Gallifa, D. Yépez
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

The ALBA Fast Orbit FeedBack system (FOFB) started its commissioning phase in September 2013, when all the required hardware was installed and the development of different controls for the feedback started. This report shows our experience tuning the different parameters to setup the system, together with vibration and beam noise measurements at different conditions. Finally, the present results and future steps for this system are described.

Poster WEPD23 [0.902 MB]

Export •

reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)

WEPD25

Upgrade Development Progress for the CERN SPS High Bandwidth Transverse Feedback Demonstrator System

kicker, feedback, pick-up, timing

700

J.E. Dusatko, J.M. Cesaratto, J.D. Fox, C.H. Rivetta
SLAC, Menlo Park, California, USA
S. De Santis
LBNL, Berkeley, California, USA
W. Höfle
CERN, Geneva, Switzerland

Funding: Work supported by the U.S. Department of Energy under contract DE-AC02-76SF00515 and the US LHC Accelerator Research Program (LARP)
A high bandwidth feedback demonstrator system has been developed for proof of concept transverse intra-bunch closed loop feedback control studies at the CERN SPS. This system contains a beam pickup, analog front end receiver, signal processor, back end driver, power amplifiers and kicker structure. The main signal processing functions are performed digitally, using very fast (4GSa/s) data converters to bring the system signals into and out of the digital domain. The digital signal processing function is flexibly implemented in an FPGA allowing for maximum speed and reconfigurability for testing multiple control algorithms. The signal processor is a modular design consisting of commercial and custom components. This approach allowed for a rapidly-developed prototype to be delivered in a short time with limited resources. Initial beam studies at the SPS using the system prior to the CERN long shutdown one (LS1) have been very encouraging. We are planning several key upgrades to the system, including the signal processor. This paper describes these upgrades and reports on their progress.

Poster WEPD25 [1.301 MB]

Export •

reference for this paper to ※ LaTeX, ※ Text, ※ IS/RefMan, ※ EndNote (xml)