MEDSI2023 - List of Keywords (operation)

Paper	Title	Other Keywords	Page
TUOBM01	ForMAX: A Beamline for Multi-Scale and Multi-Modal Structural Characterisation of Hierarchical Materials	experiment, detector, focusing, scattering	15
	J.B. González Fernández, V.H. Haghighat, S.A. McDonald, K. Nygård, L.K. Roslund MAX IV Laboratory, Lund University, Lund, Sweden
	Funding: Knut and Alice Wallenberg Foundation ForMAX is an advanced beamline at MAX IV Laboratory, enabling multi-scale structural characterisation of hierarchical materials from nm to mm length scales with high temporal resolution. It combines full-field microtomography with small- and wide-angle x-ray scattering (SWAXS) techniques, operating at 8-25 keV and providing a variable beam size. The beamline supports SWAXS, scanning SWAXS imaging, absorption contrast tomography, propagation-based phase contrast tomography, and fast tomography. The experimental station is a versatile in-house design, tailored for various sample environments, allowing seamless integration of multiple techniques in the same experiment. The end station features a nine-meter-long evacuated flight tube with a motorized small-angle x-ray scattering (SAXS) detector trolley. Additionally, a granite gantry enables independent movement of the tomography microscope and custom-designed wide-angle x-ray (WAXS) detector. These features facilitate efficient switching and sequential combination of techniques. With commissioning completed in 2022, ForMAX End Station has demonstrated excellent performance and reliability in numerous high-quality experiments.
	Slides TUOBM01 [85.355 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-TUOBM01
About •	Received ※ 23 October 2023 — Revised ※ 03 November 2023 — Accepted ※ 04 November 2023 — Issued ※ 12 May 2024
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPYP005	On the Performance of Cryogenic Cooling Systems for Optical Elements at Sirius/LNLS	controls, cryogenics, optics, ECR	40
	B.A. Francisco, M.P. Calcanha, R.R. Geraldes, L.M. Kofukuda, G.P. Lima, M. Saveri Silva, L.M. Volpe LNLS, Campinas, Brazil
	Funding: Ministry of Science, Technology and Innovation (MCTI) Sirius’ long beamlines are equipped with cryogenic cooled optics to take advantage of the Silicon thermal diffusivity and expansion at those temperatures, contributing to the preservation of the beam profile. A series of improvements was evaluated from the experience in the employment of such cooling systems during the early years of operation. The main topic refers to the prevention of instabilities in the temperature of the optics due to variations in the liquid nitrogen cylinder pressure, refill automation or progressive variations of the convective coefficient into the cryostat. This work discusses the performance of these systems after optimizing the pressure of the vessels and their control logics, the effectiveness of occasional purges, cool down techniques, and presents the monitoring interface and interlock architecture. Moreover, we present the reached solution for achieving higher beam stability, considering liquid nitrogen flow active control (commercial and in-house). Also propose the approach for the future 350 mA operation, including different cooling mechanisms.
	Poster TUPYP005 [1.250 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-TUPYP005
About •	Received ※ 24 October 2023 — Revised ※ 03 November 2023 — Accepted ※ 22 November 2023 — Issued ※ 18 July 2024
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPYP053	Current Status of Vibration Monitoring System at SOLARIS	storage-ring, software, synchrotron, monitoring	111
	M. Piszak NSRC SOLARIS, Kraków, Poland
	Solaris synchrotron radiation centre, despite being relatively new facility, began expansion of its experimental hall in 2022 in order to accommodate new beamlines. The construction works were carried out along with regular accelerators and beamlines operation and generated high levels of vibration. To better understand the influence of vibrations on electron and x-ray beams¿ stability, an accelerometer-based monitoring system was designed and implemented. The system consists of a triaxial measurement point equipped with seismic accelerometers located on bending magnet inside storage ring and a central signal conditioning and acquisition point. The results of long-term vibration data collection and analysis will be presented along with plans for the future system expansion.
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-TUPYP053
About •	Received ※ 25 October 2023 — Revised ※ 03 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 12 December 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPPP032	Photon Slits Prototype for High Beam Power Using Rotational Motions	photon, undulator, optics, vacuum	196
	X. Liu, W. Cheng, L. Hudson, H. Patel, A.C. Walters DLS, Oxfordshire, United Kingdom
	A new slits prototype utilising a rotatable oxygen-free high thermal conductivity (OFHC) copper block to absorb high heat load is developed for the Diamond-II upgrade. The slits will be used at front end of Diamond I13 X-ray Imaging and Coherence beamline which has two canted beamline branches. Required by the beamline optics, the front end slits function as virtual sources for the 250 meters long beamline. Working for the dual beam geometry, these specialised slits can vary the size of one x-ray beam with rotational motions while allowing the second beam to pass through unaffected. The rotational operations of the slits are achieved by an innovative commercial flex pivot and a unique in-house designed pivoting flexure.
	Poster WEPPP032 [1.377 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP032
About •	Received ※ 24 October 2023 — Revised ※ 04 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 18 February 2024
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPPP035	Design and Fluid Dynamics Study of a Recoverable Helium Sample Environment System for Optimal Data Quality in the New Microfocus MX Beamline at the ALBA Synchrotron Light Source	experiment, detector, cryogenics, MMI	203
	M. Quispe, J.J. Casas, C. Colldelram, D. Garriga, N. González, J. Juanhuix, J. Nicolàs, Y. Nikitin ALBA-CELLS, Cerdanyola del Vallès, Spain M. Rabasa ESEIAAT, Terrassa, Spain
	XAIRA is the new microfocus MX beamline under construction at the ALBA Synchrotron Light Source. For its experiments, the quality will be optimized by enclosing all the end station elements, including the diffractometer in a helium chamber, so that the background due to air scattering is minimized and the beam is not attenuated in the low photon energy range, down to 4 keV. This novel type of chamber comes with new challenges from the point of view of stability control and operation in low pressure conditions while enabling the recovery of the consumed helium. In particular, it is planned to collect the helium gas with a purity > 99.5% and then to recover the gas at the ALBA Helium Liquefaction Plant. Besides, the circuit includes a dedicated branch to recirculate the helium used by the goniometer bearing at the diffractometer. This paper describes the fluid dynamic conceptual design of the Helium chamber and its gas circuit, as well as numerical results based on one-dimensional studies and Computational Fluid Dynamics (CFD).
	Poster WEPPP035 [1.794 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP035
About •	Received ※ 24 October 2023 — Revised ※ 04 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 18 June 2024
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPPP040	Experimental Methods Based on Grazing Incidence at the 1W1A Beamline of the Beijing Synchrotron Radiation Facility and Its Application inn Characterizing the Condensed State Structure of Conjugated Po	experiment, synchrotron, synchrotron-radiation, radiation	210
	Y. Chen IHEP, Beijing, People’s Republic of China P. Cheng, H.X. Li Sichuan University, Chengdu, People’s Republic of China Y.C. Han CIAC, Changchun, People’s Republic of China
	The diffuse scattering experimental station of BSRF uses the dual focused monochromatic X-ray provided by 1W1A beam line to carry out structural research on crystal and film materials. This experimental station can carry out high-resolution XRD, XRR, GIXRD, GIWAXS/GISAXS and other experimental methods. GIWAXS/GISAXS is an important method for characterizing the condensed structure of conjugated polymers. We have upgraded and optimized the grazing incidence experimental method of the experimental station, and developed a grazing incidence remote rapid sampling platform. Greatly reduces testing time and enables remote online testing operations for users. Subsequently, we further established in-situ steam treatment, in-situ thermal annealing, in-situ drip coating, in-situ spin coating, in-situ scraping coating, and GISAXS testing platforms, enriching the line station grazing incidence testing methods.
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP040
About •	Received ※ 30 October 2023 — Revised ※ 06 November 2023 — Accepted ※ 10 November 2023 — Issued ※ 18 April 2024
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPPP054	Vibration Analysis of Storage Ring Girder for the Korea 4GSR	storage-ring, synchrotron, alignment, resonance	236
	G.W. Hong, T. Ha, H.S. Han, H.-G. Lee PAL, Pohang, Republic of Korea
	Ensuring the mechanical stability of the girder for a 4th generation storage ring (4GSR) is crucial to provide a high-quality photon beam to users because the mechanical motion should be maintained at less than 10% of the electron beam size which is expected to be sub-micrometer. One of the key roles of the girder is to provide structural rigidity and temperature stability while effectively suppressing vibrations from the ground during accelerator operation. The Korea 4GSR girder is being designed to have the first natural frequency above 50 Hz to minimize the effect of the ground vibration. In order to maintain better mechanical stability, it is necessary to conduct research not only on the natural vibration evaluation of the girder but also on external vibrations to the girder structure. In this paper, we introduce the result of the harmonic analysis of the girder structure using the finite element method.
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP054
About •	Received ※ 25 October 2023 — Revised ※ 06 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 18 July 2024
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THOAM02	SmarGon MCS2: An Enhanced Multi-Axis Goniometer with a New Control System	controls, software, interface, synchrotron	247
	W. Glettig, D. Buntschu, E.H. Panepucci, M. Wang PSI, Villigen PSI, Switzerland A. Omelcenko SmarAct, Oldenburg, Germany
	As an improvement on the commercially available SmarGon multi-axis goniometer (SmarAct GmbH), the MX Group at the Paul Scherrer Institute (PSI) has been pursuing further development of the system. In addition to suggesting mechanical improvements to SmarAct to improve ruggedness and reliability, PSI has developed a brand-new and flexible control system for better customization, reliability and control. Calibration routines were implemented to reduce systemic errors, and the system has been tailored for practical beamline usage. SmarGon is a six degree-of-freedom positioning device, allowing positioning of a sample and orientation around any given point, with <5um sphere of confusion diameter. It was purpose-built for protein-crystallography experiments but, as will be presented here, was also re-purposed for other applications. Two devices have been in continuous 24/7 use for two years at the MX Beamlines PXI & PXII at SLS.
	Slides THOAM02 [77.940 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THOAM02
About •	Received ※ 24 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 10 November 2023 — Issued ※ 08 January 2024
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THOBM02	First Results of a New Hydrostatic Leveling System on Test Procedures at Sirius	monitoring, ISOL, software, alignment	261
	W.R. Heinrich, G.R.S. Gama, G.J. Montagner, S.P. Oliveira, E. Teixeira SETUP, Campinas, Brazil R.B. Cardoso, L.R. Leão, S.R. Marques CNPEM, Campinas, SP, Brazil R.T. Neuenschwander LNLS, Campinas, Brazil
	Funding: FAPESP - Research Support Foundation of the State of Sao Paulo FINEP - Financier of Studies and Projects Program PIPE/PAPPE Subsidy - Phase 3 Process IDs: 2016/50070-3 and 2016/50522-1 The Hydrostatic Leveling System (HLS) is commonly employed in Structural Health Monitoring (SHM) to anticipate issues in large-scale structures. Particularly in structures like particle accelerators, it is used in high-precision alignment, where small differences in elevation such as terrestrial tides, could affect machine operation. This study outlines the development and evaluation of the first HLS based in Linear Variable Differential Transformer (LVDT) and were used to monitor the structure at LNLS/CNPEM, Brazil, from 2020 to 2023. A comparative analysis with a capacitance-based off-the-shelf HLS was executed, and experimental data analyzed through Fast Fourier Transform (FFT) confirmed the presence of tidal components in both HLS¿s data. Additionally, the correlation between level and temperature data was demonstrated by Pearson coefficient. The Setup-HLS device, developed with support from Brazilian national resources, exhibited accurate measurements in building tilt and diurnal and semi-diurnal Earth tide variations. Future researches include a calibration jig and an online verification system. This research provides a viable alternative to existing HLS systems.
	Slides THOBM02 [10.405 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THOBM02
About •	Received ※ 24 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 12 March 20244
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPPP002	Analysis of Hazards in a Flammable Gas Experiment and Development of a Testing Regime for a Polypropylene Vacuum Window	experiment, Windows, vacuum, cryogenics	270
	S.O. Bundrock, B. Billinghurst, X.E. Li, D.M. Smith CLS, Saskatoon, Saskatchewan, Canada
	Far Infrared Spectroscopy (Far-IR) is a bend magnet infrared beamline at the Canadian Light Source. The beamline utilizes a gas cell loaded with experimental gas which light is bounced through and a spectrometer to measure the absorption of the gas. For an experiment at Far-IR utilizing methane and nitrogen at 100K temperatures, issues with icing and inconsistent absorption gradients were noted at the Polymethylpentene Rigid Plastic (TPX TM) window separating the cell filled with the flammable gas mixture from the vacuum of the spectrometer. The possibility of replacing the existing windows with new 50-micron thick polypropylene windows was investigated. Material properties were not available for polypropylene at the operating temperature of the experiment. Due to the hazardous nature of the gas being held back a hazard analysis was carried out to identify potential risks and mitigations for the change. Additionally, with material properties unavailable, a testing regime was established to ensure the polypropylene could survive in the experimental environment. The experiment was successfully completed using the modified window assemblies.
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP002
About •	Received ※ 19 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 07 November 2023 — Issued ※ 08 December 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPPP028	Design and Analysis of CSNS-II Primary Stripper Foil	injection, GUI, radiation, proton	319
	J.X. Chen, Y.J. Yu, J.S. Zhang IHEP CSNS, Guangdong Province, People’s Republic of China L. Kang, L. Liu, G.Y. Wang, J.B. Yu, J.Y. Zhang IHEP, Beijing, People’s Republic of China
	Funding: National Natural Science Foundation of China, 11975253 Stripper foil is a key equipment for converting negative hydrogen ions into protons in the RCS injection zone of CSNS. The structure of the CSNS primary stripper foil adopts a rotating steel strip structure, and the replacement time of the foil is long, requiring operators to carry out maintenance work in close proximity for a long time. The energy of CSNS-II injection beam has significantly increased from 80MeV to 300MeV, and the radiation dose in the injection area will also increase, making it impossible to maintain the equipment in close proximity for a long time. Therefore, it is necessary to redesign the primary stripper foil. This article will analyze the stripper efficiency and beam injection thermodynamics of CSNS-II stripper foil, carry out automatic foil store replacement structure design, motion analysis, and prototype testing, and envision remote maintenance solutions to achieve maintenance and repair of the stripper foil with minimal human intervention.
	Poster THPPP028 [3.748 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP028
About •	Received ※ 31 October 2023 — Revised ※ 06 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 04 March 2024
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPPP053	CLSI LINAC Upgrade Project	linac, electron, controls, RF-structure	355
	L.X. Lin, J.N. Campbell, S.R. Carriere, F. Le Pimpec, K.D. Wyatt CLS, Saskatoon, Saskatchewan, Canada
	The Canadian Light Source Inc. (CLSI) is undertaking a significant Linear Accelerator (LINAC) injector Up-grade Project to enhance both the mechanical reliability and operational stability of Canada’s primary re-search synchrotron facility. In late 2018, a critical gun failure led to a seven-month facility downtime. . This incident raised concerns that the original LINAC from 1980 continued to be a high risk to daily facility operations. Furthermore, several other mechanical systems within the facility, including cooling/heating water, HVAC, and certain aspects of the LINAC vacuum systems, have also aged, resulting in decreased reliability. The upgrade to the LINAC and its associated mechanical systems presents an opportunity to significantly improve the operational reliability of the entire facility.
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP053
About •	Received ※ 20 October 2023 — Revised ※ 07 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 18 June 2024
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

TUOBM01

ForMAX: A Beamline for Multi-Scale and Multi-Modal Structural Characterisation of Hierarchical Materials

experiment, detector, focusing, scattering

15

J.B. González Fernández, V.H. Haghighat, S.A. McDonald, K. Nygård, L.K. Roslund
MAX IV Laboratory, Lund University, Lund, Sweden

Funding: Knut and Alice Wallenberg Foundation
ForMAX is an advanced beamline at MAX IV Laboratory, enabling multi-scale structural characterisation of hierarchical materials from nm to mm length scales with high temporal resolution. It combines full-field microtomography with small- and wide-angle x-ray scattering (SWAXS) techniques, operating at 8-25 keV and providing a variable beam size. The beamline supports SWAXS, scanning SWAXS imaging, absorption contrast tomography, propagation-based phase contrast tomography, and fast tomography. The experimental station is a versatile in-house design, tailored for various sample environments, allowing seamless integration of multiple techniques in the same experiment. The end station features a nine-meter-long evacuated flight tube with a motorized small-angle x-ray scattering (SAXS) detector trolley. Additionally, a granite gantry enables independent movement of the tomography microscope and custom-designed wide-angle x-ray (WAXS) detector. These features facilitate efficient switching and sequential combination of techniques. With commissioning completed in 2022, ForMAX End Station has demonstrated excellent performance and reliability in numerous high-quality experiments.

Slides TUOBM01 [85.355 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-TUOBM01

About •

Received ※ 23 October 2023 — Revised ※ 03 November 2023 — Accepted ※ 04 November 2023 — Issued ※ 12 May 2024

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPYP005

On the Performance of Cryogenic Cooling Systems for Optical Elements at Sirius/LNLS

controls, cryogenics, optics, ECR

40

B.A. Francisco, M.P. Calcanha, R.R. Geraldes, L.M. Kofukuda, G.P. Lima, M. Saveri Silva, L.M. Volpe
LNLS, Campinas, Brazil

Funding: Ministry of Science, Technology and Innovation (MCTI)
Sirius’ long beamlines are equipped with cryogenic cooled optics to take advantage of the Silicon thermal diffusivity and expansion at those temperatures, contributing to the preservation of the beam profile. A series of improvements was evaluated from the experience in the employment of such cooling systems during the early years of operation. The main topic refers to the prevention of instabilities in the temperature of the optics due to variations in the liquid nitrogen cylinder pressure, refill automation or progressive variations of the convective coefficient into the cryostat. This work discusses the performance of these systems after optimizing the pressure of the vessels and their control logics, the effectiveness of occasional purges, cool down techniques, and presents the monitoring interface and interlock architecture. Moreover, we present the reached solution for achieving higher beam stability, considering liquid nitrogen flow active control (commercial and in-house). Also propose the approach for the future 350 mA operation, including different cooling mechanisms.

Poster TUPYP005 [1.250 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-TUPYP005

About •

Received ※ 24 October 2023 — Revised ※ 03 November 2023 — Accepted ※ 22 November 2023 — Issued ※ 18 July 2024

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPYP053

Current Status of Vibration Monitoring System at SOLARIS

storage-ring, software, synchrotron, monitoring

111

M. Piszak
NSRC SOLARIS, Kraków, Poland

Solaris synchrotron radiation centre, despite being relatively new facility, began expansion of its experimental hall in 2022 in order to accommodate new beamlines. The construction works were carried out along with regular accelerators and beamlines operation and generated high levels of vibration. To better understand the influence of vibrations on electron and x-ray beams¿ stability, an accelerometer-based monitoring system was designed and implemented. The system consists of a triaxial measurement point equipped with seismic accelerometers located on bending magnet inside storage ring and a central signal conditioning and acquisition point. The results of long-term vibration data collection and analysis will be presented along with plans for the future system expansion.

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-TUPYP053

About •

Received ※ 25 October 2023 — Revised ※ 03 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 12 December 2023

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPPP032

Photon Slits Prototype for High Beam Power Using Rotational Motions

photon, undulator, optics, vacuum

196

X. Liu, W. Cheng, L. Hudson, H. Patel, A.C. Walters
DLS, Oxfordshire, United Kingdom

A new slits prototype utilising a rotatable oxygen-free high thermal conductivity (OFHC) copper block to absorb high heat load is developed for the Diamond-II upgrade. The slits will be used at front end of Diamond I13 X-ray Imaging and Coherence beamline which has two canted beamline branches. Required by the beamline optics, the front end slits function as virtual sources for the 250 meters long beamline. Working for the dual beam geometry, these specialised slits can vary the size of one x-ray beam with rotational motions while allowing the second beam to pass through unaffected. The rotational operations of the slits are achieved by an innovative commercial flex pivot and a unique in-house designed pivoting flexure.

Poster WEPPP032 [1.377 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP032

About •

Received ※ 24 October 2023 — Revised ※ 04 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 18 February 2024

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPPP035

Design and Fluid Dynamics Study of a Recoverable Helium Sample Environment System for Optimal Data Quality in the New Microfocus MX Beamline at the ALBA Synchrotron Light Source

experiment, detector, cryogenics, MMI

203

M. Quispe, J.J. Casas, C. Colldelram, D. Garriga, N. González, J. Juanhuix, J. Nicolàs, Y. Nikitin
ALBA-CELLS, Cerdanyola del Vallès, Spain
M. Rabasa
ESEIAAT, Terrassa, Spain

XAIRA is the new microfocus MX beamline under construction at the ALBA Synchrotron Light Source. For its experiments, the quality will be optimized by enclosing all the end station elements, including the diffractometer in a helium chamber, so that the background due to air scattering is minimized and the beam is not attenuated in the low photon energy range, down to 4 keV. This novel type of chamber comes with new challenges from the point of view of stability control and operation in low pressure conditions while enabling the recovery of the consumed helium. In particular, it is planned to collect the helium gas with a purity > 99.5% and then to recover the gas at the ALBA Helium Liquefaction Plant. Besides, the circuit includes a dedicated branch to recirculate the helium used by the goniometer bearing at the diffractometer. This paper describes the fluid dynamic conceptual design of the Helium chamber and its gas circuit, as well as numerical results based on one-dimensional studies and Computational Fluid Dynamics (CFD).

Poster WEPPP035 [1.794 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP035

About •

Received ※ 24 October 2023 — Revised ※ 04 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 18 June 2024

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPPP040

Experimental Methods Based on Grazing Incidence at the 1W1A Beamline of the Beijing Synchrotron Radiation Facility and Its Application inn Characterizing the Condensed State Structure of Conjugated Po

experiment, synchrotron, synchrotron-radiation, radiation

210

Y. Chen
IHEP, Beijing, People’s Republic of China
P. Cheng, H.X. Li
Sichuan University, Chengdu, People’s Republic of China
Y.C. Han
CIAC, Changchun, People’s Republic of China

The diffuse scattering experimental station of BSRF uses the dual focused monochromatic X-ray provided by 1W1A beam line to carry out structural research on crystal and film materials. This experimental station can carry out high-resolution XRD, XRR, GIXRD, GIWAXS/GISAXS and other experimental methods. GIWAXS/GISAXS is an important method for characterizing the condensed structure of conjugated polymers. We have upgraded and optimized the grazing incidence experimental method of the experimental station, and developed a grazing incidence remote rapid sampling platform. Greatly reduces testing time and enables remote online testing operations for users. Subsequently, we further established in-situ steam treatment, in-situ thermal annealing, in-situ drip coating, in-situ spin coating, in-situ scraping coating, and GISAXS testing platforms, enriching the line station grazing incidence testing methods.

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP040

About •

Received ※ 30 October 2023 — Revised ※ 06 November 2023 — Accepted ※ 10 November 2023 — Issued ※ 18 April 2024

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPPP054

Vibration Analysis of Storage Ring Girder for the Korea 4GSR

storage-ring, synchrotron, alignment, resonance

236

G.W. Hong, T. Ha, H.S. Han, H.-G. Lee
PAL, Pohang, Republic of Korea

Ensuring the mechanical stability of the girder for a 4th generation storage ring (4GSR) is crucial to provide a high-quality photon beam to users because the mechanical motion should be maintained at less than 10% of the electron beam size which is expected to be sub-micrometer. One of the key roles of the girder is to provide structural rigidity and temperature stability while effectively suppressing vibrations from the ground during accelerator operation. The Korea 4GSR girder is being designed to have the first natural frequency above 50 Hz to minimize the effect of the ground vibration. In order to maintain better mechanical stability, it is necessary to conduct research not only on the natural vibration evaluation of the girder but also on external vibrations to the girder structure. In this paper, we introduce the result of the harmonic analysis of the girder structure using the finite element method.

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP054

About •

Received ※ 25 October 2023 — Revised ※ 06 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 18 July 2024

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THOAM02

SmarGon MCS2: An Enhanced Multi-Axis Goniometer with a New Control System

controls, software, interface, synchrotron

247

W. Glettig, D. Buntschu, E.H. Panepucci, M. Wang
PSI, Villigen PSI, Switzerland
A. Omelcenko
SmarAct, Oldenburg, Germany

As an improvement on the commercially available SmarGon multi-axis goniometer (SmarAct GmbH), the MX Group at the Paul Scherrer Institute (PSI) has been pursuing further development of the system. In addition to suggesting mechanical improvements to SmarAct to improve ruggedness and reliability, PSI has developed a brand-new and flexible control system for better customization, reliability and control. Calibration routines were implemented to reduce systemic errors, and the system has been tailored for practical beamline usage. SmarGon is a six degree-of-freedom positioning device, allowing positioning of a sample and orientation around any given point, with <5um sphere of confusion diameter. It was purpose-built for protein-crystallography experiments but, as will be presented here, was also re-purposed for other applications. Two devices have been in continuous 24/7 use for two years at the MX Beamlines PXI & PXII at SLS.

Slides THOAM02 [77.940 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THOAM02

About •

Received ※ 24 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 10 November 2023 — Issued ※ 08 January 2024

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THOBM02

First Results of a New Hydrostatic Leveling System on Test Procedures at Sirius

monitoring, ISOL, software, alignment

261

W.R. Heinrich, G.R.S. Gama, G.J. Montagner, S.P. Oliveira, E. Teixeira
SETUP, Campinas, Brazil
R.B. Cardoso, L.R. Leão, S.R. Marques
CNPEM, Campinas, SP, Brazil
R.T. Neuenschwander
LNLS, Campinas, Brazil

Funding: FAPESP - Research Support Foundation of the State of Sao Paulo FINEP - Financier of Studies and Projects Program PIPE/PAPPE Subsidy - Phase 3 Process IDs: 2016/50070-3 and 2016/50522-1
The Hydrostatic Leveling System (HLS) is commonly employed in Structural Health Monitoring (SHM) to anticipate issues in large-scale structures. Particularly in structures like particle accelerators, it is used in high-precision alignment, where small differences in elevation such as terrestrial tides, could affect machine operation. This study outlines the development and evaluation of the first HLS based in Linear Variable Differential Transformer (LVDT) and were used to monitor the structure at LNLS/CNPEM, Brazil, from 2020 to 2023. A comparative analysis with a capacitance-based off-the-shelf HLS was executed, and experimental data analyzed through Fast Fourier Transform (FFT) confirmed the presence of tidal components in both HLS¿s data. Additionally, the correlation between level and temperature data was demonstrated by Pearson coefficient. The Setup-HLS device, developed with support from Brazilian national resources, exhibited accurate measurements in building tilt and diurnal and semi-diurnal Earth tide variations. Future researches include a calibration jig and an online verification system. This research provides a viable alternative to existing HLS systems.

Slides THOBM02 [10.405 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THOBM02

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Received ※ 24 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 12 March 20244

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THPPP002

Analysis of Hazards in a Flammable Gas Experiment and Development of a Testing Regime for a Polypropylene Vacuum Window

experiment, Windows, vacuum, cryogenics

270

S.O. Bundrock, B. Billinghurst, X.E. Li, D.M. Smith
CLS, Saskatoon, Saskatchewan, Canada

Far Infrared Spectroscopy (Far-IR) is a bend magnet infrared beamline at the Canadian Light Source. The beamline utilizes a gas cell loaded with experimental gas which light is bounced through and a spectrometer to measure the absorption of the gas. For an experiment at Far-IR utilizing methane and nitrogen at 100K temperatures, issues with icing and inconsistent absorption gradients were noted at the Polymethylpentene Rigid Plastic (TPX TM) window separating the cell filled with the flammable gas mixture from the vacuum of the spectrometer. The possibility of replacing the existing windows with new 50-micron thick polypropylene windows was investigated. Material properties were not available for polypropylene at the operating temperature of the experiment. Due to the hazardous nature of the gas being held back a hazard analysis was carried out to identify potential risks and mitigations for the change. Additionally, with material properties unavailable, a testing regime was established to ensure the polypropylene could survive in the experimental environment. The experiment was successfully completed using the modified window assemblies.

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP002

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Received ※ 19 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 07 November 2023 — Issued ※ 08 December 2023

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THPPP028

Design and Analysis of CSNS-II Primary Stripper Foil

injection, GUI, radiation, proton

319

J.X. Chen, Y.J. Yu, J.S. Zhang
IHEP CSNS, Guangdong Province, People’s Republic of China
L. Kang, L. Liu, G.Y. Wang, J.B. Yu, J.Y. Zhang
IHEP, Beijing, People’s Republic of China

Funding: National Natural Science Foundation of China, 11975253
Stripper foil is a key equipment for converting negative hydrogen ions into protons in the RCS injection zone of CSNS. The structure of the CSNS primary stripper foil adopts a rotating steel strip structure, and the replacement time of the foil is long, requiring operators to carry out maintenance work in close proximity for a long time. The energy of CSNS-II injection beam has significantly increased from 80MeV to 300MeV, and the radiation dose in the injection area will also increase, making it impossible to maintain the equipment in close proximity for a long time. Therefore, it is necessary to redesign the primary stripper foil. This article will analyze the stripper efficiency and beam injection thermodynamics of CSNS-II stripper foil, carry out automatic foil store replacement structure design, motion analysis, and prototype testing, and envision remote maintenance solutions to achieve maintenance and repair of the stripper foil with minimal human intervention.

Poster THPPP028 [3.748 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP028

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Received ※ 31 October 2023 — Revised ※ 06 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 04 March 2024

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THPPP053

CLSI LINAC Upgrade Project

linac, electron, controls, RF-structure

355

L.X. Lin, J.N. Campbell, S.R. Carriere, F. Le Pimpec, K.D. Wyatt
CLS, Saskatoon, Saskatchewan, Canada

The Canadian Light Source Inc. (CLSI) is undertaking a significant Linear Accelerator (LINAC) injector Up-grade Project to enhance both the mechanical reliability and operational stability of Canada’s primary re-search synchrotron facility. In late 2018, a critical gun failure led to a seven-month facility downtime. . This incident raised concerns that the original LINAC from 1980 continued to be a high risk to daily facility operations. Furthermore, several other mechanical systems within the facility, including cooling/heating water, HVAC, and certain aspects of the LINAC vacuum systems, have also aged, resulting in decreased reliability. The upgrade to the LINAC and its associated mechanical systems presents an opportunity to significantly improve the operational reliability of the entire facility.

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP053

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Received ※ 20 October 2023 — Revised ※ 07 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 18 June 2024

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