MEDSI2018 - List of Keywords (electron)

Paper	Title	Other Keywords	Page
TUPH02	Collimator for ESRF-EBS	radiation, SRF, storage-ring, shielding	23
	J. Borrel, Y. Dabin, F. Ewald, P. Van Vaerenbergh ESRF, Grenoble, France
	The function of the collimator is to localize the majority of the electron losses in the ESRF-EBS storage ring (SR). In addition, the collimator of the ESRF-EBS should absorb about 1200w of synchrotron radiation. For ESRF-EBS, the electron losses due to intra bunch scattering (Touschek scattering) will be higher than in the current ESRF SR. To control the level of radiation outside the storage ring tunnel and the activation level of the vacuum chambers, it is more efficient to localize the electron losses and block the radiations at one place rather than reinforce all of the SR tunnel shielding. The poster will show how the design has taken into account all the diverse requirements from a safety, accelerator physics, thermo-mechanical and mechanical point of view.
	Poster TUPH02 [1.569 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH02
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TUPH04	Progress on the Final Design of the APS-Upgrade Storage Ring Vacuum System	vacuum, storage-ring, photon, interface	30
	J.A. Carter, B. Billett, B. Brajuskovic, M.A. Lale, A. McElderry, J. R. Noonan, M.M. O'Neill, K. Wakefield, D.R. Walters, G.E. Wiemerslage, J. Zientek ANL, Argonne, Illinois, USA
	Funding: Argonne National Laboratory's work is supported by the U.S. Department of Energy, Office of Science under contract DE-AC02-06CH11357 The final design phase is underway for the APS-Upgrade project's storage ring vacuum system. Many aspects of the design are being worked on to address challenging interfaces and to optimize vacuum system performance. Examples of recent work include updates to ray tracing and vacuum analysis, new developments in vacuum chamber and photon absorber design, and further refinement of vacuum pumping plans to achieve the best possible pressure distributions. Recent R&D work and results from a vacuum system sector mockup have also informed designs and installation plans. An overview of progress in these areas and remaining challenges is pre-sented.
	Poster TUPH04 [7.042 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH04
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TUPH05	Design of a Radiation Tolerant, Indexing Profile Monitor for the LCLS Electron Beam	optics, radiation, vacuum, operation	33
	A.G. Cedillos, R.C. Field SLAC, Menlo Park, California, USA
	Funding: Work was performed in support of the U.S. DOE, Office of Sci-ence, LCLS project, under contract DE-AC02-76SF00515. The Linac Coherent Light Source (LCLS) electron beam can damage YAG:Ce scintillation screens. After one year of use, the existing profile monitor has diminished fluorescence of the screen. The decrease in performance has resulted in distorted beam images which can com-promise the acquired data. Scheduling a YAG screen replacement is difficult, resulting in weeks of diminished performance. We have developed a unique profile moni-tor that incorporates multiple YAG screens (Ø40 mm, 50 um thick) and methods to reduce device downtime. This device uses unique geometry to direct coherent optical transition radiation (COTR) away from the optical path, which preserves the high resolution beam image. We are presenting the operational requirements, device design and installed device operational results.
	Poster TUPH05 [2.024 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH05
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TUPH12	Multipole Injection Kicker (MIK), a Cooperative Project SOLEIL and MAX IV	synchrotron, SRF, vacuum, injection	48
	J. Da Silva Castro, P. Alexandre, R. Ben El Fekih, T. S. Thoraud SOLEIL, Gif-sur-Yvette, France
	The cooperative MIK project SOLEIL / MAX IV started in 2012 and is part of the Franco-Swedish scientific collaboration agreement, signed in 2009 and followed by framework agreements signed in 2011. The MIK is a particular electromagnet using theoretical principles of the 1950s and recently used by the new generation of synchrotrons to significantly improve the Top-Up injection of electrons into the storage rings. Indeed, this type of magnet can drastically reduce disturbances on stored beams and also offers substantial space savings. The MIK is a real opportunity for synchrotrons wishing to upgrade their facilities. One of the first MIK developed by BESSY II in 2010 gave significant results. These results motivated SOLEIL and MAX IV to develop together their own MIK. Many technical challenges have been overcome in the area of mechanical design and manufacture as well as in magnetic and high voltage design of the MIK. Currently the first series is in operation at MAX IV and displays already outstanding performances. Optimization work is in progress.
	Poster TUPH12 [4.376 MB]
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TUPH16	Hammerhead Support Design and Application at SSRF	SRF, synchrotron, FEL, radiation	60
	F. Gao, R.B. Deng, Z. Jiang, S. Xiang, L. Yin SINAP, Shanghai, People's Republic of China S.K. Sharma BNL, Upton, Long Island, New York, USA
	Electron beam stability is very important for Shanghai Synchrotron Radiation Facility(SSRF). One of the major players on beam stability is the vibration stability of magnet support systems. This paper describes several kinds of hammerhead magnet support prototypes with different structures, materials and ground fixation. Modal and response analyses of these prototypes are contrasted by finite-element analysis(FEA) and tests. The design can be applied to guide and improve the mechanical structures and the stability of magnet support systems at SSRF and other light source facilities.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH16
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TUPH25	Morphologies of Oxygen-Free Titanium and Palladium/Titanium Thin Films: New Non-Evaporable Getter (NEG) Coatings	vacuum, interface, site, experiment	84
	T. Miyazawa Sokendai, The Graduate University for Advanced Studies, Tsukuba, Japan A.H. Hashimoto, M. Yamanaka NIMS, Tsukuba, Ibaraki, Japan T. Kikuchi, K. Mase KEK, Tsukuba, Japan
	Funding: This research was partly supported by a TIA-Kakehashi grant and by the Global Research Center for Environment and Energy based on Nanomaterials Science. Non-evaporable getter (NEG) coatings are ideal for maintaining an ultrahigh vacuum (UHV) in the range 10^'8 Pa and they are widely used for accelerators because they are oil free, magnetic-field free, vibration free, economical, space saving, and energy efficient. We recently fabricated new NEG coatings consisting of low-oxygen-content Ti or oxygen-free Pd/Ti by sublimation under a clean UHV in the range 10^'8 to 10^'7 Pa []. Here, we report the determination of the morphologies of these films by scanning electron microscopy, transmission electron microscopy, scanning transmission electron microscopy, and energy-dispersive X-ray spectroscopy. The Ti and Pd films had almost uniform thicknesses of about 1.3 'm and 50 nm, respectively, and the Pd film completely overcoated the Ti film. Both the Pd and Ti thin films were uniformly deposited in plane on the stainless steel 304L substrate and they had polycrystalline structures. The interface between the Pd and Ti thin films was not abrupt. T. Miyazawa, K. Tobishima, H. Kato, M. Kurihara, S. Ohno, T. Kikuchi, and K. Mase, Vac. Surf. Sci. 61, 227 (2018).
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH25
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TUPH31	Development of a Revolver Type Undulator	undulator, insertion-device, insertion, photon	105
	T. Ramm, M. Tischer DESY, Hamburg, Germany
	A revolver type undulator is developed for the SASE section of the FLASH Free-Electron Laser (FEL) at DESY. Currently, a 1,2GeV linear accelerator injects electrons into two undulator lines to provide fully coherent VUV light to different experimental stations in two experimental halls. The more recently built FLASH2 branch consists of 12 planar undulators with a fixed magnet structure of ~32mm period length. Within plans for refurbishment of the original FLASH1 undulator section and also to open up new operation schemes with an extended photon energy range, an undulator development was started that allows for a change of different magnet structures. Once installed, it will be possible to change the wavelength range or the FEL operation scheme within a short period of time. Magnet structures can then be switched at any time without any observable effect on the electron beam orbit or the photon beam position. The single design steps are described in the following article: profile of requirements, choice of an applicable changing mechanism, development of a new magnet structure, the position of the bearing points, a new floor assembly and improvement of the cantilever arm.
	Poster TUPH31 [1.534 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH31
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WEPH03	Design of New Beam Instrumentation for the ISOLDE Isotope Separator at CERN	ISOL, vacuum, instrumentation, electronics	205
	W. Andreazza, M. Duraffourg, G.J. Focker, A. Miarnau Marin, D. Smakulska, J. Tassan-Viol, R. Veness CERN, Geneva, Switzerland
	The ISOLDE radioactive ion beam separator facility at CERN produces beams of short-lived isotopes for experiments in physics, material and medical science. New requirements for more precise measurement of profile, position and intensity has pushed the CERN beam instrumentation group to start the study of a new generation of ISOLDE beam instrumentation dedicated to the specific needs of this facility. This paper will describe the design and the development of a number of new ISOLDE instruments with the aim of achieving better performance, increased reliability and to facilitate maintenance in the radioactive environment. It will explain how modern technologies (i.e. magnetically coupled push pull, 3D additive machining) have been used to make a modern, precise and reliable beam instrumentation design.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-WEPH03
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WEPH12	Thermo-Mechanical Aspects of the MOBIPIX, a Compact X-Ray Imaging System with Embedded GPU	simulation, detector, synchrotron, electronics	223
	A. Gilmour, W.R. Araujo, J.M. Polli LNLS, Campinas, Brazil
	Funding: The MOBIPIX project is part of Sirius project funded by the Brazilian Ministry of Science, Technology, Innovations and Communications. In the light of the high brilliance fourth generation syn-chrotron light sources, real-time imaging techniques be-came possible, boosting the demand for fast and reliable detectors. Mobipix project is a compact X-ray imaging camera based on Medipix3RX* ASIC designed for Sirius*. The control and acquisition system uses Sys-tem-On-a-Chip technology with embedded GPUs where data processing algorithms will run in real time. The Mobipix X-ray detector is de-signed to perform as a video camera, enabling X-ray imaging experiments and beam diagnose, at thousands of frames per second, without external computers. This paper presents the development of the Mobipix detector mechanics. The authors describe the path taken to design the structural aspects, ensuring robustness and versatility in the device installation to the beamlines, and the thermal aspects, regarding forced air cooling, high heat density, and small volume through which the flow will occur. The latter aspects were developed by exploiting CFD modelling. The Mobipix has 28 x 28 mm² active area, composed by 260k pixels of 55 x 55 'm2, and is planned to achieve continuous readout up to 2000 FPS. LNLS is a member of CERN Medipix3 Collaboration. https://medipix.web.cern.ch/collaboration/medipix3-collaboration ** Sirius is the new Brazilian Synchrotron Light Source under construction
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-WEPH12
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THOAMA06	A New X-Ray Beam for the ESRF Beamlines, Opto-Mechanical Global Survey	SRF, undulator, optics, photon	316
	Y. Dabin, R. Barrett, SJ. Jarjayes, M. Sanchez del Rio ESRF, Grenoble, France
	The new ESRF photon source EBS, introduces important changes for the beamlines. Half of them are concerned with the concept of low beta (small source size/ high divergence). This survey is an opto-mechanical review with all of the thermal/high heat-load issues on optics. This plan uses new package, OASYS aimed at making X-ray beam simulations for most optical parameters. White beam aspects are introduced, using ANSYS and COMSOL modules, leading to beam propagation FEA analysis with deformed optics. This presentation describes the optical aspects of the ESRF beamlines (high/low beta optics), and their transition towards this new source. Some key issues like IDs beam illumination; power filtering and optimization of the best part of the spectrum are detailed. Mirrors and monochromator crystals deformation will be presented, first for the day-one best conditions. As a second issue, OASYS enables to simulate the full beamline, from the IDs to the experiment, allowing simulating virtual experiments, with samples. This work is developed through many ESRF contributors; first the OASYS designers, Optics group, and then opto-mechanical experts, in association with mechanical engineering. OASYS (OrAnge SYnchrotron Suite) is a simulation tool suite (2013)- This open source platform supports SHADOW, XOP, SRW (source)-Maintained and distributed by the ESRF-M. Sanchez Del Rio-L. Rebuffi
	Slides THOAMA06 [7.552 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-THOAMA06
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THPH07	Nanosurveyor 2: A Compact Instrument for Nano-Ptychography at the Advanced Light Source	survey, hardware, MMI, ISOL	352
	R.S. Celestre, K. Nowrouzi, H.A. Padmore, D.A. Shapiro LBNL, Berkeley, California, USA K. Nowrouzi UCB, Berkeley, California, USA
	Funding: This research used resources of the Advanced Light Source, which is a DOE Office of Science User Facility under contract no. DE-AC02-05CH11231. The Advanced Light Source has developed a compact tomographic microscope based on soft x-ray ptychography for the study of meso and nanoscale materials [1,2]. The microscope utilizes the sample manipulator mechanism from a commercial TEM coupled with laser interferometric feedback for zone plate positioning and a fast frame rate charge-coupled device detector for soft x-ray diffraction measurements. The microscope has achieved scan rates of greater than 50 Hz, including motor move, data readout and x-ray exposure, with a positioning accuracy of better than 2 nm RMS and has achieved spatial resolution of better than 5 nm. The instrument enables the use of commercially available sample holders compatible with FEI TEMs. This allows in-situ measurement of samples using both soft x-rays and electrons. This instrument is a refinement of a currently commissioned instrument called The Nanosurveyor, which has demonstrated resolution of better than 20nm in both two and three dimensions using 750 eV x-rays. [3] The instrument has been installed on the new COSMIC beamline at the ALS. It will enable spectromicroscopy and tomography of materials with wavelength limited spatial resolution. [1] P. Thibault, et al, Science, 321, 379 (2008) [2] P. Denes, et al, Rev. Sci. Inst., 80, 083302 (2009) [3] D. Shapiro, et al, Nature Photonics volume 8, pages 765-769 (2014)
	Poster THPH07 [1.422 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-THPH07
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THPH28	The Development of PAL-XFEL Beamline	FEL, experiment, detector, vacuum	397
	S.H. Kim, I. Eom, S-M. Hwang, H.J. Hyun, K.S. Kim, M-J. Kim, S. Kim, S.N. Kim, S. Kim, C. Lee, G.S. Park, J. Park, J.K. Park, S.Y. Rah PAL, Pohang, Republic of Korea
	Pohang Accelerator Laboratory X-ray Free Electron Laser(PAL-XFEL) is a research facility, which is designed to generate extremely intense (assuming 1x10¹² photon/pulse at 12.4 keV) and ultra-short (10-200 femtosecond) pulsed X-rays. Now two beamlines were constructed, the one is hard X-ray and the other is soft X-ray. The beamline is consist of UH (Undulator hall) and OH (Optical hall), EH (Experimental hall). The UH is usually the same as the front end of a beamline, and OH has the same function as PTL (Photon Transfer Line). We have two hutches including HXPP and HCXI in hard X-ray beamline. The two hutches are connected each other, and sharing main optics (Mirrors and DCM, etc). PAL-XFEL is a very precise facility and has very large heat power, so thermal and structural analysis as well as vibration analysis is essential. Now many vacuum components of beamline were installed and completed the test of performance.
	Poster THPH28 [1.888 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-THPH28
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THPH40	Training the Next Generation of Engineers for Photon Based Light Sources	ECR, synchrotron, survey, site	421
	S.M. Scott DLS, Oxfordshire, United Kingdom
	The continued increase in the number of Light Sources, their beamlines and the need for upgrades of both machine and beamlines requires an ever larger supply of suitably qualified and experienced engineers. If there is a world wide shortage of Engineers where will facilities find these engineers and how can they be trained to the required level? This paper discusses these issues by looking at the growth of demand for engineers within light sources, the evidence of shortages of engineers, the changes in attitudes to work by younger people, the skills necessary, training opportunities and the issues in attracting people into the light sources industry. The paper will also outline the training week for early career engineers delivered at Diamond.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-THPH40
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FROAMA05	Engineering Design and Commissioning Performance of the ESM and Six Soft X-Ray Beamlines at NSLS-II	photon, optics, diagnostics, MMI	435
	Y. Zhu, S. Hulbert, M. Idir, I. Jarrige, S. O'Hara, E. Vescovo BNL, Upton, Long Island, New York, USA
	Two of the five NSLS-II Experimental Tools (NEXT) project insertion-device beamlines developed for the NSLS-II facility at Brookhaven National Laboratory are state-of-the-art soft X-ray beamlines covering the 15 eV- 1500 eV photon energy range. The engineering challenges of these two beamlines included: accurate and realistic optical simulations, nearly perfect optic figure and mechanical/thermal implementation, and advanced diagnostics systems developed in-house. The measured performance (flux, spot size, resolution) of these two beamlines closely matches the calculated values. Here, the engineering design and performance measurements of these two beamlines are presented.
	Slides FROAMA05 [15.534 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-FROAMA05
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Paper

Title

Other Keywords

Page

TUPH02

Collimator for ESRF-EBS

radiation, SRF, storage-ring, shielding

23

J. Borrel, Y. Dabin, F. Ewald, P. Van Vaerenbergh
ESRF, Grenoble, France

The function of the collimator is to localize the majority of the electron losses in the ESRF-EBS storage ring (SR). In addition, the collimator of the ESRF-EBS should absorb about 1200w of synchrotron radiation. For ESRF-EBS, the electron losses due to intra bunch scattering (Touschek scattering) will be higher than in the current ESRF SR. To control the level of radiation outside the storage ring tunnel and the activation level of the vacuum chambers, it is more efficient to localize the electron losses and block the radiations at one place rather than reinforce all of the SR tunnel shielding. The poster will show how the design has taken into account all the diverse requirements from a safety, accelerator physics, thermo-mechanical and mechanical point of view.

Poster TUPH02 [1.569 MB]

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TUPH04

Progress on the Final Design of the APS-Upgrade Storage Ring Vacuum System

vacuum, storage-ring, photon, interface

30

J.A. Carter, B. Billett, B. Brajuskovic, M.A. Lale, A. McElderry, J. R. Noonan, M.M. O'Neill, K. Wakefield, D.R. Walters, G.E. Wiemerslage, J. Zientek
ANL, Argonne, Illinois, USA

Funding: Argonne National Laboratory's work is supported by the U.S. Department of Energy, Office of Science under contract DE-AC02-06CH11357
The final design phase is underway for the APS-Upgrade project's storage ring vacuum system. Many aspects of the design are being worked on to address challenging interfaces and to optimize vacuum system performance. Examples of recent work include updates to ray tracing and vacuum analysis, new developments in vacuum chamber and photon absorber design, and further refinement of vacuum pumping plans to achieve the best possible pressure distributions. Recent R&D work and results from a vacuum system sector mockup have also informed designs and installation plans. An overview of progress in these areas and remaining challenges is pre-sented.

Poster TUPH04 [7.042 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH04

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TUPH05

Design of a Radiation Tolerant, Indexing Profile Monitor for the LCLS Electron Beam

optics, radiation, vacuum, operation

33

A.G. Cedillos, R.C. Field
SLAC, Menlo Park, California, USA

Funding: Work was performed in support of the U.S. DOE, Office of Sci-ence, LCLS project, under contract DE-AC02-76SF00515.
The Linac Coherent Light Source (LCLS) electron beam can damage YAG:Ce scintillation screens. After one year of use, the existing profile monitor has diminished fluorescence of the screen. The decrease in performance has resulted in distorted beam images which can com-promise the acquired data. Scheduling a YAG screen replacement is difficult, resulting in weeks of diminished performance. We have developed a unique profile moni-tor that incorporates multiple YAG screens (Ø40 mm, 50 um thick) and methods to reduce device downtime. This device uses unique geometry to direct coherent optical transition radiation (COTR) away from the optical path, which preserves the high resolution beam image. We are presenting the operational requirements, device design and installed device operational results.

Poster TUPH05 [2.024 MB]

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TUPH12

Multipole Injection Kicker (MIK), a Cooperative Project SOLEIL and MAX IV

synchrotron, SRF, vacuum, injection

48

J. Da Silva Castro, P. Alexandre, R. Ben El Fekih, T. S. Thoraud
SOLEIL, Gif-sur-Yvette, France

The cooperative MIK project SOLEIL / MAX IV started in 2012 and is part of the Franco-Swedish scientific collaboration agreement, signed in 2009 and followed by framework agreements signed in 2011. The MIK is a particular electromagnet using theoretical principles of the 1950s and recently used by the new generation of synchrotrons to significantly improve the Top-Up injection of electrons into the storage rings. Indeed, this type of magnet can drastically reduce disturbances on stored beams and also offers substantial space savings. The MIK is a real opportunity for synchrotrons wishing to upgrade their facilities. One of the first MIK developed by BESSY II in 2010 gave significant results. These results motivated SOLEIL and MAX IV to develop together their own MIK. Many technical challenges have been overcome in the area of mechanical design and manufacture as well as in magnetic and high voltage design of the MIK. Currently the first series is in operation at MAX IV and displays already outstanding performances. Optimization work is in progress.

Poster TUPH12 [4.376 MB]

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TUPH16

Hammerhead Support Design and Application at SSRF

SRF, synchrotron, FEL, radiation

60

F. Gao, R.B. Deng, Z. Jiang, S. Xiang, L. Yin
SINAP, Shanghai, People's Republic of China
S.K. Sharma
BNL, Upton, Long Island, New York, USA

Electron beam stability is very important for Shanghai Synchrotron Radiation Facility(SSRF). One of the major players on beam stability is the vibration stability of magnet support systems. This paper describes several kinds of hammerhead magnet support prototypes with different structures, materials and ground fixation. Modal and response analyses of these prototypes are contrasted by finite-element analysis(FEA) and tests. The design can be applied to guide and improve the mechanical structures and the stability of magnet support systems at SSRF and other light source facilities.

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TUPH25

Morphologies of Oxygen-Free Titanium and Palladium/Titanium Thin Films: New Non-Evaporable Getter (NEG) Coatings

vacuum, interface, site, experiment

84

T. Miyazawa
Sokendai, The Graduate University for Advanced Studies, Tsukuba, Japan
A.H. Hashimoto, M. Yamanaka
NIMS, Tsukuba, Ibaraki, Japan
T. Kikuchi, K. Mase
KEK, Tsukuba, Japan

Funding: This research was partly supported by a TIA-Kakehashi grant and by the Global Research Center for Environment and Energy based on Nanomaterials Science.
Non-evaporable getter (NEG) coatings are ideal for maintaining an ultrahigh vacuum (UHV) in the range 10^'8 Pa and they are widely used for accelerators because they are oil free, magnetic-field free, vibration free, economical, space saving, and energy efficient. We recently fabricated new NEG coatings consisting of low-oxygen-content Ti or oxygen-free Pd/Ti by sublimation under a clean UHV in the range 10^'8 to 10^'7 Pa [*]. Here, we report the determination of the morphologies of these films by scanning electron microscopy, transmission electron microscopy, scanning transmission electron microscopy, and energy-dispersive X-ray spectroscopy. The Ti and Pd films had almost uniform thicknesses of about 1.3 'm and 50 nm, respectively, and the Pd film completely overcoated the Ti film. Both the Pd and Ti thin films were uniformly deposited in plane on the stainless steel 304L substrate and they had polycrystalline structures. The interface between the Pd and Ti thin films was not abrupt.
* T. Miyazawa, K. Tobishima, H. Kato, M. Kurihara, S. Ohno, T. Kikuchi, and K. Mase, Vac. Surf. Sci. 61, 227 (2018).

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TUPH31

Development of a Revolver Type Undulator

undulator, insertion-device, insertion, photon

105

T. Ramm, M. Tischer
DESY, Hamburg, Germany

A revolver type undulator is developed for the SASE section of the FLASH Free-Electron Laser (FEL) at DESY. Currently, a 1,2GeV linear accelerator injects electrons into two undulator lines to provide fully coherent VUV light to different experimental stations in two experimental halls. The more recently built FLASH2 branch consists of 12 planar undulators with a fixed magnet structure of ~32mm period length. Within plans for refurbishment of the original FLASH1 undulator section and also to open up new operation schemes with an extended photon energy range, an undulator development was started that allows for a change of different magnet structures. Once installed, it will be possible to change the wavelength range or the FEL operation scheme within a short period of time. Magnet structures can then be switched at any time without any observable effect on the electron beam orbit or the photon beam position. The single design steps are described in the following article: profile of requirements, choice of an applicable changing mechanism, development of a new magnet structure, the position of the bearing points, a new floor assembly and improvement of the cantilever arm.

Poster TUPH31 [1.534 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH31

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WEPH03

Design of New Beam Instrumentation for the ISOLDE Isotope Separator at CERN

ISOL, vacuum, instrumentation, electronics

205

W. Andreazza, M. Duraffourg, G.J. Focker, A. Miarnau Marin, D. Smakulska, J. Tassan-Viol, R. Veness
CERN, Geneva, Switzerland

The ISOLDE radioactive ion beam separator facility at CERN produces beams of short-lived isotopes for experiments in physics, material and medical science. New requirements for more precise measurement of profile, position and intensity has pushed the CERN beam instrumentation group to start the study of a new generation of ISOLDE beam instrumentation dedicated to the specific needs of this facility. This paper will describe the design and the development of a number of new ISOLDE instruments with the aim of achieving better performance, increased reliability and to facilitate maintenance in the radioactive environment. It will explain how modern technologies (i.e. magnetically coupled push pull, 3D additive machining) have been used to make a modern, precise and reliable beam instrumentation design.

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reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-WEPH03

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WEPH12

Thermo-Mechanical Aspects of the MOBIPIX, a Compact X-Ray Imaging System with Embedded GPU

simulation, detector, synchrotron, electronics

223

A. Gilmour, W.R. Araujo, J.M. Polli
LNLS, Campinas, Brazil

Funding: The MOBIPIX project is part of Sirius project funded by the Brazilian Ministry of Science, Technology, Innovations and Communications.
In the light of the high brilliance fourth generation syn-chrotron light sources, real-time imaging techniques be-came possible, boosting the demand for fast and reliable detectors. Mobipix project is a compact X-ray imaging camera based on Medipix3RX* ASIC designed for Sirius**. The control and acquisition system uses Sys-tem-On-a-Chip technology with embedded GPUs where data processing algorithms will run in real time. The Mobipix X-ray detector is de-signed to perform as a video camera, enabling X-ray imaging experiments and beam diagnose, at thousands of frames per second, without external computers. This paper presents the development of the Mobipix detector mechanics. The authors describe the path taken to design the structural aspects, ensuring robustness and versatility in the device installation to the beamlines, and the thermal aspects, regarding forced air cooling, high heat density, and small volume through which the flow will occur. The latter aspects were developed by exploiting CFD modelling. The Mobipix has 28 x 28 mm² active area, composed by 260k pixels of 55 x 55 'm2, and is planned to achieve continuous readout up to 2000 FPS.
* LNLS is a member of CERN Medipix3 Collaboration. https://medipix.web.cern.ch/collaboration/medipix3-collaboration
** Sirius is the new Brazilian Synchrotron Light Source under construction

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THOAMA06

A New X-Ray Beam for the ESRF Beamlines, Opto-Mechanical Global Survey

SRF, undulator, optics, photon

316

Y. Dabin, R. Barrett, SJ. Jarjayes, M. Sanchez del Rio
ESRF, Grenoble, France

The new ESRF photon source EBS, introduces important changes for the beamlines. Half of them are concerned with the concept of low beta (small source size/ high divergence). This survey is an opto-mechanical review with all of the thermal/high heat-load issues on optics. This plan uses new package, OASYS aimed at making X-ray beam simulations for most optical parameters. White beam aspects are introduced, using ANSYS and COMSOL modules, leading to beam propagation FEA analysis with deformed optics. This presentation describes the optical aspects of the ESRF beamlines (high/low beta optics), and their transition towards this new source. Some key issues like IDs beam illumination; power filtering and optimization of the best part of the spectrum are detailed. Mirrors and monochromator crystals deformation will be presented, first for the day-one best conditions. As a second issue, OASYS enables to simulate the full beamline, from the IDs to the experiment, allowing simulating virtual experiments, with samples. This work is developed through many ESRF contributors; first the OASYS designers, Optics group, and then opto-mechanical experts, in association with mechanical engineering.
OASYS (OrAnge SYnchrotron Suite) is a simulation tool suite (2013)- This open source platform supports SHADOW, XOP, SRW (source)-Maintained and distributed by the ESRF-M. Sanchez Del Rio-L. Rebuffi

Slides THOAMA06 [7.552 MB]

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THPH07

Nanosurveyor 2: A Compact Instrument for Nano-Ptychography at the Advanced Light Source

survey, hardware, MMI, ISOL

352

R.S. Celestre, K. Nowrouzi, H.A. Padmore, D.A. Shapiro
LBNL, Berkeley, California, USA
K. Nowrouzi
UCB, Berkeley, California, USA

Funding: This research used resources of the Advanced Light Source, which is a DOE Office of Science User Facility under contract no. DE-AC02-05CH11231.
The Advanced Light Source has developed a compact tomographic microscope based on soft x-ray ptychography for the study of meso and nanoscale materials [1,2]. The microscope utilizes the sample manipulator mechanism from a commercial TEM coupled with laser interferometric feedback for zone plate positioning and a fast frame rate charge-coupled device detector for soft x-ray diffraction measurements. The microscope has achieved scan rates of greater than 50 Hz, including motor move, data readout and x-ray exposure, with a positioning accuracy of better than 2 nm RMS and has achieved spatial resolution of better than 5 nm. The instrument enables the use of commercially available sample holders compatible with FEI TEMs. This allows in-situ measurement of samples using both soft x-rays and electrons. This instrument is a refinement of a currently commissioned instrument called The Nanosurveyor, which has demonstrated resolution of better than 20nm in both two and three dimensions using 750 eV x-rays. [3] The instrument has been installed on the new COSMIC beamline at the ALS. It will enable spectromicroscopy and tomography of materials with wavelength limited spatial resolution.
[1] P. Thibault, et al, Science, 321, 379 (2008)
[2] P. Denes, et al, Rev. Sci. Inst., 80, 083302 (2009)
[3] D. Shapiro, et al, Nature Photonics volume 8, pages 765-769 (2014)

Poster THPH07 [1.422 MB]

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THPH28

The Development of PAL-XFEL Beamline

FEL, experiment, detector, vacuum

397

S.H. Kim, I. Eom, S-M. Hwang, H.J. Hyun, K.S. Kim, M-J. Kim, S. Kim, S.N. Kim, S. Kim, C. Lee, G.S. Park, J. Park, J.K. Park, S.Y. Rah
PAL, Pohang, Republic of Korea

Pohang Accelerator Laboratory X-ray Free Electron Laser(PAL-XFEL) is a research facility, which is designed to generate extremely intense (assuming 1x10¹² photon/pulse at 12.4 keV) and ultra-short (10-200 femtosecond) pulsed X-rays. Now two beamlines were constructed, the one is hard X-ray and the other is soft X-ray. The beamline is consist of UH (Undulator hall) and OH (Optical hall), EH (Experimental hall). The UH is usually the same as the front end of a beamline, and OH has the same function as PTL (Photon Transfer Line). We have two hutches including HXPP and HCXI in hard X-ray beamline. The two hutches are connected each other, and sharing main optics (Mirrors and DCM, etc). PAL-XFEL is a very precise facility and has very large heat power, so thermal and structural analysis as well as vibration analysis is essential. Now many vacuum components of beamline were installed and completed the test of performance.

Poster THPH28 [1.888 MB]

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THPH40

Training the Next Generation of Engineers for Photon Based Light Sources

ECR, synchrotron, survey, site

421

S.M. Scott
DLS, Oxfordshire, United Kingdom

The continued increase in the number of Light Sources, their beamlines and the need for upgrades of both machine and beamlines requires an ever larger supply of suitably qualified and experienced engineers. If there is a world wide shortage of Engineers where will facilities find these engineers and how can they be trained to the required level? This paper discusses these issues by looking at the growth of demand for engineers within light sources, the evidence of shortages of engineers, the changes in attitudes to work by younger people, the skills necessary, training opportunities and the issues in attracting people into the light sources industry. The paper will also outline the training week for early career engineers delivered at Diamond.

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FROAMA05

Engineering Design and Commissioning Performance of the ESM and Six Soft X-Ray Beamlines at NSLS-II

photon, optics, diagnostics, MMI

435

Y. Zhu, S. Hulbert, M. Idir, I. Jarrige, S. O'Hara, E. Vescovo
BNL, Upton, Long Island, New York, USA

Two of the five NSLS-II Experimental Tools (NEXT) project insertion-device beamlines developed for the NSLS-II facility at Brookhaven National Laboratory are state-of-the-art soft X-ray beamlines covering the 15 eV- 1500 eV photon energy range. The engineering challenges of these two beamlines included: accurate and realistic optical simulations, nearly perfect optic figure and mechanical/thermal implementation, and advanced diagnostics systems developed in-house. The measured performance (flux, spot size, resolution) of these two beamlines closely matches the calculated values. Here, the engineering design and performance measurements of these two beamlines are presented.

Slides FROAMA05 [15.534 MB]

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