APAC 2007 - List of Keywords (injection)

A B C D E F G H I K L M O P Q R S T U V W

injection

Paper	Title	Other Keywords	Page
MOXMA02	Commisioning Experience of SNS	linac, target, beam-losses, beam-transport	6
	M. A. Plum ORNL, Oak Ridge, Tennessee
	The Spallation Neutron Source accelerator complex consists of a 2.5 MeV H^- front-end injector system, a 186 MeV normal-conducting linear accelerator, a 1 GeV superconducting linear accelerator, an accumulator ring and associated beam transport lines. The linac was commissioned in five discrete runs, starting in 2002 and completed in 2005. The accumulator ring and associated beam transport lines were commissioned in two runs in February and April 2006. With the completed commissioning of the SNS accelerator, the facility has begun initial low-power operations. In the course of beam commissioning, most beam performance parameters and beam intensity goals have been achieved at low duty factor. A number of beam dynamics measurements have been performed, including emittance evolution, transverse coupling in the ring, beam instability thresholds, and beam distributions on the target. The commissioning results, achieved beam performance and initial operating experience of the SNS linac will be presented.
	Slides

TUXMA01	LHC Status	dipole, quadrupole, cryogenics, insertion	46
	L. R. Evans CERN, Geneva
	The installation of the Large Hadron Collider at CERN is now approaching completion. Almost 1100 of the 1232 main bending magnets are installed and the whole ring will be installed by the end of March 2007. Emphasis is now moving from installation to commissioning, with the cool down of the first of the 8 sectors to liquid helium temperature well underway. In the other sectors, interconnect work is proceeding at a satisfactory pace and will be finished by the end of August. It is foreseen to inject the first beam into the LHC in November with the objective of having first collisions at the injection energy (450 GeV/c) in order to debug the machine and detectors before stopping for the annual winter shutdown. During this time, the detector installation will be finished and the machine will be pushed to full current ready for the first physics run at 7 TeV per beam in 2008.
	Slides

TUYMA03	Commissioning and Status of the Diamond Storage Ring	feedback, storage-ring, vacuum, closed-orbit	66
	R. P. Walker Diamond, Oxfordshire
	Diamond is the UK's new 3'rd Generation Synchrotron Light Source. The construction phase has just concluded and the first operation with external users is about to begin. This presentation will concentrate on the second phase of commissioning of the storage ring at the full energy of 3GeV, which began in September 2006, with a full set of 7 Phase I Insertion Devices installed. The current status and future plans will also be described.
	Slides

TUC3H101	Optimization Of The BEPCII Lattice With Frequency Map Analysis	resonance, lattice, sextupole, radiation	100
	Y. Jiao, S. X. Fang, Q. Qin, Wang, J. Q. Wang, G. Xu, D. M. Zhou IHEP Beijing, Beijing
	It is the first time of systemically applying the frequency map analysis (FMA) onto the lattice of BEPCII, which is an e±e? collider. We compute various parameters of the lattice with AT which the FMA code is imbedded in, and compared with that of MAD and SAD codes. The BEPCII colliding and injecting mode lattice are analyzed and optimized with FMA while turning the RF cavity and radiation on. Both on- and off-momentum frequency maps are overviewed. The transverse-longitudinal coupling resonance is found to be able to have large effects on the beam dynamics.
	Slides

TUPMA006	Study on the BEPCII Lattice	lattice, luminosity, dynamic-aperture, synchrotron	109
	Y. Sun, Z. Y. Guo PKU/IHIP, Beijing J. Gao IHEP Beijing, Beijing
	BEPCII, the upgrading project of the Beijing Electron-Positron Collider (BEPC), has been designed with a luminosity of 10³³ cm^-2s-1 at the -charm energy region. According to the beam-beam simulation results, the luminosity of BEPCII with a crossing collision angle of 11 mrad is about 0.50×10³³ cm^-2s-1 with the original operation mode at the working point of 6.53/5.58. To increase the operating luminosity of the BEPCII, a low momentum compaction factor (?P) collision mode has been studied which can increase the luminosity to 0.54×10³³ cm^-2s-1. If the bunch length of the low ?P mode is reduced from 1.5 cm to 1.2 cm, a mode with vertical beta function at IP equal to 1.2 cm could push the luminosity to 0.828×10³³ cm^-2s-1 at the working points 6.53/5.56. Also, the BEPCII synchrotron radiation mode is optimized to get a larger dynamic aperture and much more stable tunes.

TUPMA014	State of the SLS Multi-bunch Feedback	feedback, synchrotron, kicker, storage-ring	118
	M. Dehler, G. Marinkovic, P. Pollet, T. Schilcher PSI, Villigen
	In order to control coupled bunch oscillations in the SLS storage ring, feedback systems for all three planes were forseen. The filters are realized as fully digital bunch by bunch systems. With the development of dedicated Analog to Digital and Digital to Analog Converter boards, the feedbacks could be commissioned. Important parts of the computations for the transverse planes could be implemented into the ADC FPGA, making the DSPs originally planned to be used obsolete and allowing for an extremely low latency time of 200 ns. The systems give a larger freedom in the choice of the beam optics and also lead to a better closure of the injection bump during top up mode.

TUPMA022	Construction Progress of the SSRF Injector	booster, linac, synchrotron, synchrotron-radiation	133
	D. M. Li, H. H. Li, Z. Q. Shen, M. H. Zhao, Z. Zhao SINAP, Shanghai
	SSRF (Shanghai Synchrotron Radiation Facility) is a 3rd generation synchrotron radiation source facility under construction. To meet the full energy top-up injection requirements of 3.5GeV storage ring, the injector of SSRF was designed which consists of a 150 MeV linac, a two super-periods 28 cells FODO type booster and two transfer lines (LT and HT). The cycle rate of booster is 1~2 Hz. SSRF was started building in the end of 2004, and the commissioning of accelerator part will be completed in April 2008 according to schedule. The Booster will start the commissioning until Oct 2007. Now most of on-line installing components, power supplies, and instruments are under manufacture or purchasing for SSRF booster. In this paper, the description of SSRF booster design, the progress of booster and transfer lines construction are described. Keywords: SSRF; booster; construction

TUPMA034	Operation Experience of Top-up injection at Taiwan Light Source	storage-ring, photon, beam-losses, insertion-device	151
	G.-H. Luo, H.-P. Chang, C.-T. Chen, J. Chen, J.-R. Chen, C.-C. Kuo, K. S. Liang, Y.-C. Liu, R. J. Sheu, D.-J. Wang NSRRC, Hsinchu
	The storage ring of Taiwan Light Source (TLS) has one Superconducting (SC) cavity, one SC wavelength shifter, and two SC wigglers installed during last two years. The operation mode was also upgraded to have the capability of top-up injection. Top-up is an operation mode in which the beam current is maintained above certain level by frequent injections in the storage ring. The current stability maintains in the range of 10-3 for long period of operation. It provides constant thermal loading on all components in the storage ring and the optics components of beamlines, as well as constant signal to the beam position monitor. The top-up injection is a routine operation mode during user shifts at TLS. Statistics, operation experience and future expansion will be discussed in this paper.

TUPMA053	Injection Optimisation for INDUS-2	kicker, optics, septum, synchrotron	184
	A. A. Fakhri, G. Singh RRCAT, Indore (M. P.)
	In this paper commissioning experience of injection into INDUS-2, a 2.5 GeV synchrotron radiation source is discussed. In initial stage of commissioning, partial beam loss was observed. In this context effect of various injection errors such as mismatch between pulse widths, jitter and magnetic field stability of kickers on injected and stored beam are studied1. A brief summary of the results is presented. After reducing jitter and fine adjustments of timings of kicker power supplies, partial beam loss reduced significantly.

TUPMA056	Injection of Beam Shaped Locally with Nonlinear Optics	sextupole, octupole, emittance, septum	187
	C.-X. Wang ANL, Argonne, Illinois
	We discuss nonlinear beam shaping by octupole and sextupole to fold the tail of a Gaussian beam into its core, for the purpose of improving betatron injection in storage rings by significantly reducing the beam width at the injection septum and thus reducing beam centroid offset from the stored beam. Necessary conditions as well as challenges for such nonlinear injections are explored.

TUPMA060	A Hamiltonian for Wave Length Shifter and its Studies on INDUS-1	electron, quadrupole, dynamic-aperture, betatron	199
	A. A. Fakhri, G. Singh RRCAT, Indore (M. P.)
	The INDUS-1 is a 450 MeV synchrotron radiation source for the production of VUV radiation. In order to produce the radiation of shorter wavelengths(lc = 31 Ao), a superconducting wavelength shifter (WLS) with peak fieldof 3T is being considered for Indus-1. In this paper, L. Smith's Hamiltonian for Halbach's magnetic field model has been re-derived to estimate focussing component under the compensated electron beam trajectory transformation. Various linear compensation schemes are presented to minimize the linear effects of the WLS and its effects on machine operation are also theoretically studied.

TUPMA075	Status of the CTF3 Frequency Multiplication Rings	linac, electron, vacuum, collider	217
	A. Ghigo, C. Biscari, F. Marcellini, M. Serio, A. Stella INFN/LNF, Frascati (Roma) R. Corsini, S. Doebert, G. Geschonke, L. Rinolfi, F. Tecker, P. Urschütz CERN, Geneva
	The CLIC Test Facility (CTF3) is in construction at CERN by an international collaboration to demonstrate the feasibility of two beam acceleration scheme at the CLIC parameters. The drive beam of the CTF3 is composed by a fully loaded Linac that generates a long bunch train and two rings that provide the high current and bunch frequency multiplication by interleaving bunch trains. The status of the commissioning of the first ring (Delay Loop) and of the transfer lines are reported together with the installation of the second ring (Combiner Ring).

TUPMA084	Ions for LHC: Status of the Injector Chain	ion, emittance, optics, quadrupole	226
	D. Manglunki, A. Beuret, J. Borburgh, C. Carli, M. Chanel, L. D. Dumas, T. Fowler, M. Gourber-Pace, S. Hancock, M. Hourican, J. M. Jowett, D. Kuchler, E. Mahner, M. Martini, S. Maury, S. Pasinelli, U. Raich, A. Rey, J.-P. Royer, R. Scrivens, L. Sermeus, G. Tranquille, J. L. Vallet, B. Vandorpe CERN, Geneva
	The LHC will, in addition to proton runs, be operated with Pb ions and provide collisions at energies of 5.5 TeV per nucleon pair, i.e. more than 1.1 PeV per event, to experiments. The transformation of CERN's ion injector complex (Linac3-LEIR-PS-SPS) to allow collision of ions in LHC in 2008 is well under way. The status of these modifications and the latest results of commissioning will be presented. The remaining challenges are reviewed.

TUPMA085	LEIR: Towards the Nominal Lead Ion Beam	ion, electron, linac, vacuum	229
	M. Chanel, M.-E. Angoletta, V. Baggiolini, P. Belochitskii, A. Beuret, A. Blas, J. Borburgh, C. Carli, K. Cornelis, T. Fowler, M. Gourber-Pace, S. Hancock, C. E. Hill, M. Hourican, D. Kuchler, E. Mahner, D. Manglunki, S. Maury, M. M. Paoluzzi, S. Pasinelli, J. Pasternak, U. Raich, F. Roncarolo, C. Rossi, J.-P. Royer, M. Royer, R. Scrivens, L. Sermeus, G. Tranquille, M. Vretenar CERN, Geneva
	The Low Energy Ion Ring (LEIR) is a central piece for LHC ion operation at CERN, transforming long Linac3 pulses into high density bunches needed for LHC. The first phase of LEIR commissioning successfully attained its goal of providing the so-called 'early ion beam' (one bunch of 2.25 10⁸ Lead ions) needed for the first LHC ion runs with reduced luminosity. Studies in view of generating the beam needed for nominal ion operation (2 bunches of 4.5 10⁸ ions in LEIR) are being carried out in parallel with the setting-up of the early beam in the accelerators further downstream in the LHC injector chain. The main characteristics of the machine using a new state of the art electron cooler are discussed together with the latest results.

TUPMA109	Thermal-Induced Frequency Detuning of 350 MHz RFQ Structure	rfq, linac, proton, controls	256
	N. K. Sharma, S. C. Joshi, N. K. Sharma RRCAT, Indore (M. P.)
	A 350 MHz, 4.5 MeV RFQ structure is being studied for proposed High Power Proton Linac for Indian SNS. At high RF duty operation of RFQ due to RF induced heating the structure would be subjected to thermal deformations and hence the detuning of resonating structure from its designed resonating frequency. A detailed Thermal-Structural-Electromagnetic sequential analysis of RFQ has been performed using Multi-physics ANSYS (Finite Element Analysis Software). A cooling scheme has been worked out to get the efficient heat removal from the structure to minimize the thermal induced frequency shift. During analysis the parameters such as cooling water flow rate, cooling water inlet temperatures, cooling channel locations, cavity thickness etc. are varied to study the effect of these parameters on temperature distribution and associated frequency variation. The frequency shift is found highly sensitive to vane tip cooling parameters.

TUPMA111	Present Status of J-PARC MR Synchrotron	extraction, septum, synchrotron, power-supply	259
	T. Koseki, H. Kobayashi, H. Matsumoto, M. Yoshioka KEK, Ibaraki
	The Japan Proton Accelerator Research Complex (J-PARC) is a joint project of High Energy Accelerator Research Organization (KEK) and Japan Atomic Energy Agency (JAEA). The J-PARC accelerator complex is composed of a 400 MeV proton linac, a 3 GeV Rapid-Cycling Synchrotron (RCS), and a 50 GeV Proton Synchrotron (MR). Installation of the MR which has two extraction sections, fast extraction for the Neutrino Facility and slow extraction for the Hadron Facility, is now underway. Test of injection and extraction components such as septum magnets and kicker magnets is progressed as well. Beam commissioning scenario is now being prepared. Maintenance scenario of activated components is also crucial in a high power proton accelerator. Beam commissioning will start in May 2008.

WEZMA02	China Spallation Neutron Source Design	linac, target, proton, dipole	310
	J. Wei BNL, Upton, Long Island, New York S. X. Fang, S. Fu, H. F. Ouyang, Q. Qin, H. Qu, J. Tang, S. Wang, X. Xu IHEP Beijing, Beijing J. Feng, Q. W. Yan, J. Zhang, Z. Zhang IPHY, Beijing F. W. Wang Institute of Physics, Chinese Academy of Sciences, Beijing
	The China Spallation Neutron Source (CSNS) is a newly approved project to be constructed in Guangdong, China. The accelerator complex consists of an H^- linear accelerator and a rapid cycling synchrotron accelerating the beam to 1.6 GeV at 25 Hz repetition rate. The primary challenge is to build a robust and reliable user’s facility with upgrade potential at a fraction of “world standard” cost. During the past years, major iterations were made on the design of CSNS accelerator systems. This paper summarizes the machine design and discusses rationale of design revisions.
	Slides

WEZMA04	Superconducting Cyclotron Project at VECC	cyclotron, extraction, cryogenics, controls	320
	R. K. Bhandari DAE/VECC, Calcutta
	Construction of the K-500 superconducting cyclotron at Kolkata is now in final stages. The main magnet was operated satisfactorily for alomost one year during 2005. The coil was continuously kept cooled at 4.2K temperature during the entire period. Extensive magnetic field measuremens were done for correction of the imperfections, centering of the main coil, calculation of operational settings, calculation of extraction trajectory etc. Subsequently in April 2006 the coil has been warmed up to facilitate assembly of the other systems of the machine. All major systems have been fabricated and the assembly is currently going on. We plan to start the commissioning tests in the first half of year 2007. In this paper our experience with the operation of the main superconducting magnet and magnetic field measurements will be discussed. Developmental highlights of various systems will be briefly presented.
	Slides

WEC3H101	Multi-bunch Feedback Activities at Photon Factory Advanced Ring	feedback, kicker, betatron, controls	330
	W. X. Cheng, T. Obina KEK, Ibaraki
	The photon factory advanced ring (PF-AR) is a dedicated single bunch light source at KEK, however, some users require multi-bunch operation for high intensity x-ray beams. The old transverse damping system can suppress only one (or two) bunches, while new multi-bunch feedback system has been successfully tested to a maximum of 64 bunches. Both analog and digital transverse feedback loop has been tested at AR to store multi-bunches. Long cables are used to delay the bunch position error signal from BPM buttons for analog feedback control loop. Betatron phase advance between stripline kicker and BPM are selected to be around 90 deg. For digital feedback loop, it based on a FPGA test board. Bunch position error signal sampled by ADC, filtered by 10-tap FIR filter implemented in FPGA and send to DAC output for correction. FIR filter is well designed to increase the system dynamic range. Digital delay can also be implemented inside FPGA instead of long cable delays. Maximum beam current of 97mA has been achieved for several bunches’ storage, betatron oscillation of the stored beam can be suppressed well.

WEPMA005	Magnetic Field Calculations of a 10 MeV High Current Compact Cyclotron	cyclotron, betatron, extraction, focusing	342
	V. S. Pandit, A. Goswami, P. R. Sarma, P. Sing Babu DAE/VECC, Calcutta
	A 10MeV, 5-10mA 4-sector compact proton cyclotron, is being developed at VECC. A 2.45 GHz microwave ion source will produce ~30mA of proton beam at 100keV. It will be bunched and injected axially in the central region of the cyclotron where a spiral inflector will place the beam on the proper orbit. Two delta type resonators located in the opposite valleys will be used for providing acceleration to the beam. Beam will be extracted using an electrostatic deflector. The main aim of this project is to study and settle various physics and technological problems associated with the handling of high intensity beams. In this paper we present the results of design studies of the main magnet. The conceptual dimensions of the magnet and the properties of equilibrium orbits were first obtained using hard edge approximations and matrix method. The primary size of the magnet was estimated using 2D POISSON code. Finally a 3D code was utilized for the field calculation and optimization. The profile of magnet sectors was optimized to get the desired values of isochronous field and the betatron tunes.

WEPMA013	Analysis and Correction of the Measured COD in INDUS-2	quadrupole, closed-orbit, synchrotron, betatron	351
	R. Husain, A. D. Ghodke, G. Singh RRCAT, Indore (M. P.)
	In Indus-2 there are 56 button type beam position monitors (BPMs), 48 horizontal and 40 vertical steering magnets. The measured orbit has been fitted by effective quadrupole misalignments by using SVD of the response matrix generated between BPMs and the quadrupole misalignments in the model obtained by setting the magnet strengths as per the current set in the magnets. We present the different global and local orbit correction algorithms developed for minimizing and controlling the orbit. The preliminary result for the orbit correction, at injection energy, in horizontal plane using best orbit correctors identified by doing SVD of the response matrix is presented. The results for the local four orbit bumps are also presented.

WEPMA035	Degradation of the Beam passing through Idle Coupled Cavities	impedance, linac, proton, coupling	369
	Y. Shobuda JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken S. Machida STFC/RAL/ASTeC, Chilton, Didcot, Oxon
	Effects of wake fields on high intensity proton beam are studied, when it passes through idle coupled cavities. There is the same number of frequencies as the number of gaps that consist on the coupled cavity. Since cavities are designed for the accelerated beam, the shunt impedance for each mode is different from the designed value, when the beam is not accelerated. This change of shunt impedances reduces the detuning effect for the reduction of beam degradation.

WEPMA038	A Study on the Applicability of Landau Cavity to the 1.2 GeV Booster Synchrotron at Tohoku University	synchrotron, impedance, booster, target	375
	F. Hinode, K. Akiyama, K. Kasamsook, M. Kawai, A. Kurihara, T. Muto, K. Nanbu, Y. Shibasaki, S. Takahashi, T. Tanaka, M. Yasuda Tohoku University, School of Scinece, Sendai
	In these years, a 1.2 GeV Stretcher-Booster (STB) ring at Laboratory of Nuclear Science, Tohoku University, has been mainly operated in the booster-storage mode in which the high energy gamma-ray beam generated via bremsstrahlung from internal target wire has been utilized for experiments of nuclear physics. Beam energy injected from linac is not high enough (150 or 200 MeV), so that radiation damping time is much long. Although the injector linac provides sufficient beam current without beam stacking, circulating beam current decays rapidly due to instabilities before the beam reaches the top energy. One of the main causes in the beam current limitation is supposed to be strong coupled bunch instability due to the cavity HOM. In order to suppress the instability, applicability of a third-harmonic Landau cavity has been studied for the STB. The 1.5 GHz Landau cavity was already manufactured and installed in the ring. Beam commissioning will be started soon. We are also planning to introduce a longitudinal feedback into the STB. We will report the present status of the STB in this conference.

WEPMA058	Tune and Lifetime Studies at the Australian Synchrotron	quadrupole, sextupole, kicker, synchrotron	401
	M. J. Spencer, M. J. Boland, R. T. Dowd, G. LeBlanc, Y. E. Tan ASP, Clayton, Victoria
	The 3GeV Australian Synchrotron will begin operation in March 2007. This paper outlines the tune and lifetime measurement systems. It also provides a summary of a number of studies completed using these systems. Three different tune measurement systems have been tested. Lifetime measurements made using the DCCT were used to optimise the strengths of the harmonic sextupoles and the location of the tunes. The vertical aperture was determined using scrapers. Beta-function measurements have been completed by shunting individual quadrupoles and noting the resultant tune changes. Chromaticity measurements have been made by observing the change in tune as the RF frequency is varied.

WEPMA063	Diagnostic Supports for Top-Up Operation at TLS	diagnostics, synchrotron, storage-ring, linac	410
	K. H. Hu, J. Chen, K. T. Hsu, C. H. Kuo, C.-J. Wang NSRRC, Hsinchu
	Routine top-up operation of Taiwan Light Source (TLS) was started from October 2005. Various diagnostics tools are needed to support the top-up operation. These tools include diagnostics for injection efficiency, filling pattern, tune, instability, loss pattern measurement. Design consideration, details and future plans of these diagnostics will be summary in this report.

WEPMA065	Experience of Beam Diagnostic Systems in Commissioning Stage of Indus-2	diagnostics, storage-ring, synchrotron, betatron	413
	T. A. Puntambekar, L. K. Babbar, A. Banerji, A. Deep, A. C. Holikatti, D. K. Joshi, A. Karnewar, S. Kotaiah, M. Kumar, R. K. Nathwani, S. K. Suhane, Y. Tyagi, S. Yadav RRCAT, Indore (M. P.)
	Indus-2 is a 2.5 GeV synchrotron radiation source under commissioning at this center. Beam injection trials in the storage ring began in August 2005. Beam diagnostics systems played an important role during commissioning of the storage ring. Beam diagnostic systems installed in the machine include beam profile monitor, orbit measurement system, wall current monitor, DCCT, striplines, tune measurement system and sighting beam line. This paper describes the diagnostic systems, experience of operation of these systems during commissioning, results obtained and the present status. During the initial stages of beam injection and circulation in INDUS-2 wall current monitors, beam profile monitors and sighting beam line proved to be of utmost help. In the current stage of near routine beam operation, the main focus has shifted to the measurement of beam parameters with the objective of improving beam current and lifetime. A study of beam orbit measurement was recently taken up. The beam orbit was measured before and after generating an orbit perturbation. A study of betatron tune measurements has been initiated.

WEPMA087	Control System for Beam Diagnostic System of Indus-2	controls, diagnostics, electron, monitoring	449
	A. Chauhan, P. Fatnani, S. Gangopadhyay, B. N. Merh RRCAT, Indore (M. P.)
	This paper presents the Beam Diagnostics Control System for Indus-2 that monitors and controls the parameters related to Beam Profile Monitors (BPM), Beam Position Indicators (BPI), Direct Current Transformer (DCCT) and XZ-selection for strip-lines. The system has three-layered architecture. The middle and lower layer have VME stations with CPU cards having RTOS OS-9. The lowest layer has nine stations that house various Analog and Digital I/O boards connected to the actual devices in the field. The boards include 4-channel 16-bit ADC cards developed for BPI interfacing. The middle layer collects the data from lower layer and passes to top layer and passes the commands from top layer to the lower layer. The top layer has the GUI for operator control built using a SCADA software PVSS. It provides various features to the user for graphical display, trending, configuring, controlling, data-logging and selective data monitoring of the parameters. This system finds use right from the beam injection stage to the Orbit correction stage in addition to the normal operation stage of the machine.

WEPMA142	Commissioning and Operational Experience with INDUS-2 RF Systems	controls, klystron, power-supply, vacuum	517
	M. Lad, M. K. Badapanda, A. Bohrey, P. R. Hannurkar, A. Jain, M. K. Jain, N. Kumar, M. Prasad, V. Rajput, D. Sharma, N. Tiwari, R. K. Tyagi, R. K.DEO. deo RRCAT, Indore (M. P.)
	2.5 GeV, 300mA Synchrotron Radiation Source Indus-2 is under commissioning phase at RRCAT, Indore. The beam injection in Indus 2 from Booster Synchrotron started in July 2005,since then RF system is in operation. RF system compensates the SR losses experienced by the circulating electrons in the bending magnets and insertion devices. In addition to compensate Synchrotron losses, RF system will have to supply power for boosting energy from 600 MeV to 2.5 GeV. Indus-2 RF system employs four numbers of ELETTRA make elliptical cavities to generate 1500 kV accelerating RF voltage at 505.812 MHz. Each RF cavity is powered by 64 kW RF amplifier. With around 650 KeV of SR losses the system is designed to provide cavity gap voltage such that sufficiently high quantum and Touschek lifetime is achieved. Initially conditioning of all four RF cavities was performed. Then system was handed over for operation and with beam trials optimization of different parameters of RF system is being done. The paper describes test results of Indus-2 RF system & commissioning and operational experience of Indus-2 RF system.

THXMA02	Linear Accelerator Designs for the Upgrade of the CERN Proton Injector Complex (Linac4, SPL)	linac, proton, ion, luminosity	529
	M. Vretenar, G. Bellodi, R. Garoby, F. Gerigk, K. Hanke, A. M. Lombardi, S. Maury, M. Pasini, C. Rossi, E. Zh. Sargsyan CERN, Geneva
	Looking beyond the commissioning of the LHC, which is expected to start at the end of 2007, CERN is setting up its scientific plan for the years to come. The concerns about the reliability of the old LHC injectors and the need to progressively remove the technical bottlenecks towards higher luminosity in the LHC have initiated a reflection on the design of the main elements of the LHC injection chain. A plan under consideration foresees in the years 2007-2010 the construction of a 160 MeV H− linear accelerator, Linac4, injecting into the old 1.4 GeV PS Booster (PSB). In a second stage, the PSB could be replaced by a superconducting linac, the SPL, at an energy between 3.5 and 5 GeV. The Proton Synchrotron (PS) would be in turn replaced by a new PS2 reaching a higher energy of 50 GeV. Linac4 and SPL can operate at a higher duty cycle than needed for LHC injection, allowing functioning as a high-intensity facility for neutrino or radioactive ion physics at a later stage. This paper describes the design of the two linear accelerators involved in this upgrade strategy, Linac4 and SPL, and outlines some results of the R&D programme aimed at preparing the construction of Linac4.
	Slides

THXMA03	Construction and Commissioning of the HIRFL-CSR	ion, acceleration, dipole, accumulation	534
	J. W. Xia, Y. He, Y. Liu, J. C. Yang, X. D. Yang, W.-L. Zhan, Y. yuan IMP, Lanzhou
	CSR is a new ion cooler-storage-ring system in China IMP, it consists of a main ring (CSRm) and an experimental ring (CSRe). The two existing cyclotrons SFC (K=69) and SSC (K=450) of the Heavy Ion Research Facility in Lanzhou (HIRFL) will be used as its injector system. The heavy ion beams from HIRFL will be first injected into CSRm, accompanying with the accumulation, e-cooling and acceleration, finally extracted to CSRe for many internal-target experiments. In 2005 the main construction of the CSR project was finished, and from that the preliminary commissioning of CSRm was started, including the first turn commissioning as a beam line, the stripping injection, and the zero-bumping orbit test, fixed-bumping orbit test with four in-dipole coils, bumping orbit test, C-beam accumulation and the investigation of the closed orbit with BPM. And now the correction of closed orbit, e-cooling and ramping tests are just on going.
	Slides

THYMA01	Kickers for Injection and Extraction in Damping, Combiner and Storage Rings	kicker, impedance, extraction, damping	539
	F. Marcellini INFN/LNF, Frascati (Roma)
	Injection and extraction kickers play a fundamental role in all the projects of new major accelerators at present under study. The feasibility of these accelerators depends also on the possibility to realize kickers based on unconventional design and new technologies. This paper describes the R&D carried out at LNF on two different types of deflecting devices. The first are the kickers for the Damping Ring (DR) of the International Linear Collider (ILC) and the Storage Rings (SR) of colliders like DAFNE. They require very low impedance, good field uniformity in a wide region around the beam axis and very short pulse duration for limiting the length and consequently the cost of the DR and for reducing the perturbation of the stored bunches in SRs. The tests made on stripline prototypes, fast high voltage pulsers and vacuum feedthroughs are presented. The second are the RF kickers for the CLIC Test Facility 3 (CTF3) for which an original SW structure has been designed and realized for the Delay Loop (DL) while a more conventional TW deflector allows the multiplication of bunch current and frequency in the Combiner Ring (CR). Results of their performances are described.
	Slides

THZMA02	Status of the Australian Synrotron project	storage-ring, booster, synchrotron, diagnostics	583
	G. LeBlanc ASP, Clayton, Victoria
	The Australian Synchrotron, a synchrotron light facility based on a 3-GeV electron storage ring, is currently being commissioned at a site in the Metropolitan District of Melbourne. On July 14, 2006 less than three years after earth moving machines started to prepare the site, beam was captured, accumulated and stored in the storage ring. Storage ring commissioning, and beamline installation and commissioning will continue through March 2007, after which the facility will officially become operational. In this paper we give a brief overview of the facility and its beamlines, followed by the latest results from accelerator commissioning activities.
	Slides

THZMA04	Status and Future of Taiwan Light Source	emittance, storage-ring, feedback, synchrotron	602
	K. S. Liang, J.-R. Chen, C.-C. Kuo, G.-H. Luo, D.-J. Wang NSRRC, Hsinchu
	The Taiwan Light Source of National Synchrotron Radiation Research Center (NSRRC) has reached a very stable operation condition and productive scientific outputs. The copper Doris RF cavities were replaced with a niobium Superconducting (SC) RF cavity in order to eliminate higher-order-modes and deliver higher beam current. Superconducting wigglers were installed to provide higher flux at higher photon energy. The storage ring is now operated at 300 mA top-up mode with better than 97 % of beam availability during users shifts. The original layout of the magnets has been greatly modified to accommodate one SC wavelength shifter at the injection section, one SC wiggler at the RF cavity section, and three SC wigglers in achromatic sections in addition to the original design of one wiggler and three undulators. In view of the future scientific demands, the NSRRC is proposing to construct a new synchrotron storage ring of 3.0~3.3 GeV and ultra low emittance, the Taiwan Photon Source (TPS). The TPS will provide brilliant X-rays at 10²¹ photons/s/0.1%BW /mm2/mr2 by SC undulator upon its completion, making it the brightest synchrotron light with the finest performance in the world.
	Slides

THZH103	The Progress of Accelerator Mass Spectrometry and their Applications in China	site, ion, controls, target	597
	J.-E. Chen, Z. Y. Guo, K. X. Liu PKU/IHIP, Beijing
	The AMS technology and their applications have been developed at Peking University, China Institute of Atomic Energy and Chinese Academy of Sciences since 1980s’. In this presentation, the AMS facilities in China are described and the applications mainly in the field of archaeology are presented. Interesting results about the establishment of Chronology frame of Xia-Shang-Zhou dynasties based on cultural remains at Longshan, Er-li-tou. Xinzha and Tianma-Qucun Site etc. are given as examples. More then one hundred samples of oracle bone were studied for archaeological radio-carbon dating with the AMS facility at Peking University. AMS applications in the fields of geosciences, environmental and biomedical sciences are introduced as well.
	Slides

THC3MA05	Bunch Compression using the Transport Line and Short Bunch revolving in NewSUBARU	linac, storage-ring, radiation, electron	619
	S. Suzuki, T. Asaka JASRI/SPring-8, Hyogo-ken Y. Hisaoka, T. Matsubara, T. Mitsui, Y. Shoji NewSUBARU/SPring-8, Laboratory of Advanced Science and Technology for Industry (LASTI), Hyogo
	We have demonstrated the idea of circulating a short, intense linac bunch for some tens of turns in an isochronous ring. We compressed a bunch from the SPring-8 linac to a few picoseconds rms by means of an energy compression system and a beam transport line from the linac to NewSUBARU. The NewSUBARU storage ring was set to a quasi-isochronous condition and the bunch circulated for some tens of turns after injection while maintaining the short bunch length. And we measured the coherents synchrotron radiation at 90-140GHz by semiconducter detector. The bunch length is maintained in about 20 microseconds, but the CSR power decreases little by little.
	Slides

THC3H102	Practical Considerations in the Design of a High Current Commercial H-minus Cyclotron	cyclotron, ion, ion-source, vacuum	625
	M. P. Dehnel, P. T. Jackle, M. Roeder, T. M. Stewart, J. E. Theroux D-Pace, Nelson, British Columbia
	High current H-minus cyclotrons (>10⁰⁰ micro-Ampere) are being developed and implemented for radioisotope production, radioactive therapeutic implants and other applications. The beam dynamics and general physics design of these cyclotron systems must be well done. However, in order not to compromise an elegant and effective physics design, practical engineering considerations must be carefully considered and then implemented. Based on our experience in the design, upgrading, and maintenance of commercial H-minus cyclotron systems, we offer "best practices" to be considered in the engineering design and implementations of such systems.
	Slides

THPMA013	Effect of Eddy Current in Magnetic Lamination on Pulsed Septum Magnet Response	septum, kicker, storage-ring, vacuum	643
	R. S. Shinde, Gaud, V. K. Gaud, S. Kotaiah, Kumar, S. Kumar, R. K. Mishra, Pandey, M. M. Pandey, Pareek, P. Pareek RRCAT, Indore (M. P.)
	Indus-2 Pulsed septum magnets have been developed using 0.1 mm thick Ni-Fe laminations, which were electrically insulated from each other. These laminations were annealed in Hydrogen furnace & then oxidized in a Air controlled furnace. A process has been optimized to get 10-micron oxidization thickness on both sides of lamination. A pulse test set up has been built to characterize the laminations at high magnetization rates (‘~ 1 T/us). Electromagnetic simulation of the main field in the gap & field free region ' leakage/stray field for Septum magnets were performed using Flux 2D. A stray field (~1G-m) was stringent so as not to distort circulating beam. Magnetic screen has been optimized to minimize the stray fields. A pulsed thin & thick septum magnets were excited using 50 ms half sine wave, the field homogeneity in the order of 100 PPM & Integrated stray field 0.7 G-m has been obtained. This paper focus on Eddy current effect in lamination on pulse magnetic response, attenuation, phase shift & resonance in lamination due to pulse frequency. Modeling of magnetic circuit, shielding of septum & pulse response of NiFe lamination at high magnetic amplitudes(1.2T ) is also presented. R. K. Mishra, P. Pareek, M. M.Pandey, V. Gaud, S. Senthil kumar

THPMA091	Air Temperature Analysis and Control Improvement for the Injection Area at TLS	controls, booster, synchrotron, linac	773
	J.-C. Chang, Y.-H. Liu, Z.-D. Tsai NSRRC, Hsinchu
	This paper presents the air temperature analysis and control improvement for the injection area at the Taiwan Light Source (TLS). The injector consists of a 50-MeV LINAC and a 1.5-GeV booster synchrotron. Because of insufficient cooling capacity, the air temperature was too high ( > 27 degree C ) and the temporal temperature variation was more than 2 degree C in one day. The air relative humidity was often higher than 60%. The problem of insufficient cooling capacity became more serious after the top-up mode operation. To cope with the abovementioned thermal problem, the cooling capacity was increased and the PID parameter of the temperature control was also optimized. Totally 18 temperature sensors were distributed in this area to on-line record the air temperature history. The temperature control was improved to suppress temporal temperature variation within ± 0.1 degree C. The thermal uniformity was also much improved than ever.

THPMA111	Target Assembly Design and Neutronics Study for Indian Spallation Neutron Source Using NMTC/JAM Code	target, proton, synchrotron, ion	797
	V. K. Senecha, M. Kawai KEK, Ibaraki
	Target-moderator-reflector assembly (TMRA) design studies for the best neutronics performance of the proposed Indian Spallation Neutron Source(ISNS) have been carried out using high energy particle transport code NMTC/JAM. The issues relevant for TMRA design like selection of target material, effect of target shape and dimensions and placement of moderator, suitable material for reflector its size have been addressed using the code calculations. NMTC/JAM code calculations have shown that the neutron yield per proton for thick Pb target for varying target lengths are in good agreement within the error limit with the results reported by experimental group and matching with the results of JAERI code calculations (JAERI 'Data/code 2001-07). Different geometrical configurations for TMRA were attempted and resulted tally's for track-length, surface crossing, nuclide yield, heat deposition, and time tallies for the neutron have been calculated. It has been observed that wing type structure of moderator position with respect to the target is suitable for optimum neutron yield in the pulsed mode. (1) NMTC/JAM, JAERI code 2001-007, Koji Niita et al.(2001).(2)Development of target for KENS, M. Kawai et al. Procd. 2nd Workshop on Materials Tech. for spallation neutron source,141(2001).