IBIC2023 - List of Keywords (injection)

Paper	Title	Other Keywords	Page
MOP008	Consideration of Beam Instrumentation for SOLARIS Linac Upgrade	linac, diagnostics, lattice, emittance	45
	A.I. Wawrzyniak, J.B. Biernat, R. Panaś, J.J. Wiechecki, M.T. Ünal NSRC SOLARIS, Kraków, Poland A. Curcio LNF-INFN, Frascati, Italy
	SOLARIS linac currently operates at 540 MeV and is used as an injector to the storage ring, where after the accumulation the energy is ramped up to 1.5 GeV via two active RF cavities. Top-up injection would be of extreme benefits for user operation, therefore a new 1.5 GeV linac is being designed. The idea is to replace the current machine without infrastructural interventions in terms of tunnel expansion. Performed studies demonstrate that the best solution is provided by a Hybrid S-band/C-band LINAC. One of the main goals is to achieve bunch compression below the picosecond level and low-emittance beams for a future short-pulse facility or a Free Electron Laser. Within this presentation the results of performed simulations will be presented together with the concept of different diagnostics as BPMs, current transformers, YAG screens, coherent diffraction radiation monitor distribution.
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2023-MOP008
About •	Received ※ 08 September 2023 — Revised ※ 09 September 2023 — Accepted ※ 13 September 2023 — Issue date ※ 27 September 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOP013	Expansion of the MTCA Based Direct Sampling LLRF at MedAustron for Hadron Synchrotron Applications	synchrotron, pick-up, diagnostics, hadron	63
	M. Wolf, M. Cerv, C. Kurfürst, S. Myalski, M. Repovž, C. Schmitzer EBG MedAustron, Wr. Neustadt, Austria A. Bardorfer, B. Baričevič, P. Leban, P. Paglovec, M. Škabar I-Tech, Solkan, Slovenia
	The MedAustron Ion Therapy Centre is a synchrotron-based particle therapy facility located in Lower Austria, which delivers proton and carbon ion beams for cancer treatments. Currently the facility treats over 400 patients per year and is expected to double this number in the future. Six years since the start of clinical operation, MedAustron is experiencing end-of-life issues concerning the digital Low Level RF components in the injector and the synchrotron. Replacements for these applications are under development and the chosen hardware is suitable to also update multiple beam diagnostic devices in the facility. Main targets for updates are the Schottky monitors, which were never properly integrated into the MedAustron Control system and the position pickup measurement system, which currently does not support turn by turn measurements. Comparison measurements with other state of the art diagnostic devices are ongoing to demonstrate the capabilities of the generic hardware. Furthermore, these measurements should show the increased usability and diagnostic potential compared to the legacy devices.
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2023-MOP013
About •	Received ※ 07 September 2023 — Revised ※ 09 September 2023 — Accepted ※ 13 September 2023 — Issue date ※ 16 September 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOP022	Replacement of the Single-Pass BPM System with MicroTCA.4-based Versatile Electronics at SPring-8	electron, electronics, kicker, timing	74
	H. Maesaka, N. Hosoda, S. Takano RIKEN SPring-8 Center, Hyogo, Japan H. Dewa, T. Fujita, N. Hosoda, H. Maesaka, M. Masaki, S. Takano JASRI, Hyogo, Japan
	We have developed MicroTCA.4-based versatile BPM readout electronics for the SPring-8 upgrade project, SPring-8-II (). The input signals are processed by an rf front-end rear transition module (RTM) with band-pass filters, amplifiers, and step attenuators and digitized by 16-bit 370 MSPS high-speed digitizers on an advanced mezzanine card (AMC). The field-programmable gate array (FPGA) on the AMC calculates both single-pass and COD beam positions. The current BPM system at SPring-8 consists of approximately twenty single-pass dedicated BPMs and over two hundred other COD dedicated ones. In advance of SPring-8-II, so far, we renewed half of the single-pass dedicated BPM electronics to the MicroTCA.4. A graphical user interface (GUI) for the new BPM system was also developed and ready for tuning. The single-pass BPM resolution was confirmed to be better than 100 um for a 100 pC single bunch, sufficient for SPring-8-II. The other existing single-pass BPM electronics will also be renewed this summer. The full renewal of remaining COD dedicated BPM electronics to the versatile MicroTCA.4 ones is planned in the subsequent years before the construction of SPring-8-II. () H. Maesaka et al., "Development of MTCA.4-based BPM Electronics for SPring-8 Upgrade", Proc. IBIC’19, doi:10.18429/JACoW-IBIC2019-WEBO03
	Poster MOP022 [1.074 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2023-MOP022
About •	Received ※ 06 September 2023 — Revised ※ 07 September 2023 — Accepted ※ 14 September 2023 — Issue date ※ 30 September 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOP037	Tune Feedback at the Canadian Light Source	feedback, quadrupole, operation, storage-ring	106
	W.A. Wurtz, C.K. Baribeau, A.M. Duffy CLS, Saskatoon, Saskatchewan, Canada
	In order to maintain good injection efficiency for top-up operation at the Canadian Light Source, we must keep the betatron tunes constant even as changes in insertion device fields cause the tunes to vary. To meet this requirement, we implemented a tune feedback system. We measure the tunes at a rate of 1 Hz using Dimtel bunch-by-bunch systems. The transverse feedback function of the bunch-by-bunch systems provides tune measurements without disturbing the electron beam. We adjust two quadrupole families at a rate of 0.25 Hz to control the horizontal and vertical tunes. In this article we describe the tune feedback system, its development and its performance. The system has proven to be very robust, enabling reliable top-up operation.
	Poster MOP037 [1.284 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2023-MOP037
About •	Received ※ 24 August 2023 — Revised ※ 07 September 2023 — Accepted ※ 14 September 2023 — Issue date ※ 21 September 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOP044	"Instantaneous" Lifetime Measurement in Storage Ring with Top-Up Injection	operation, storage-ring, electron, collider	125
	I. Pinayev BNL, Upton, New York, USA
	Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-SC0012704 with the U.S. Department of Energy Top-up operation becomes routine in the light sources. The goal of the top-up operation is to keep the current of the circulating beam stable to avoid variations of the heat load on the beamline optics. It is also considered for the electron-ion collider to maintain the polarization of the electron beam. Frequent re-injection makes measurement of the beam lifetime very difficult if possible. Since, only part of the bunch train is refreshed during the injection cycle then the distribution of the bunch charges in the train has a characteristic saw-tooth distribution. The slope of saw tooth and step in the bunch charge distribution is defined by the lifetime and filling frequency. Both parameters can be used for the measurement. The data for processing can be obtained either from fast current transformer or from the raw ADC signal from beam position monitor. In this paper we present the theoretical considerations as well as experimental data from NSLS-II storage ring.
	Poster MOP044 [0.284 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2023-MOP044
About •	Received ※ 25 August 2023 — Revised ※ 10 September 2023 — Accepted ※ 13 September 2023 — Issue date ※ 18 September 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WE3I01	Gas Jet-Based Fluorescence Profile Monitor for Low Energy Electrons and High Energy Protons at LHC	electron, experiment, photon, distributed	312
	O. Sedláček, A.R. Churchman, A. Rossi, G. Schneider, C.C. Sequeiro, K. Sidorowski, R. Veness CERN, Meyrin, Switzerland M. Ady, S. Mazzoni, M. Sameed European Organization for Nuclear Research (CERN), Geneva, Switzerland P. Forck, S. Udrea GSI, Darmstadt, Germany O. Sedláček, O. Stringer, C.P. Welsch, H.D. Zhang The University of Liverpool, Liverpool, United Kingdom O. Sedláček, O. Stringer, C.P. Welsch, H.D. Zhang Cockcroft Institute, Warrington, Cheshire, United Kingdom A. Webber-Date Cockcroft Institute, University of Liverpool, Liverpool, United Kingdom
	The ever-developing accelerator capabilities of increasing beam intensity, e.g. for High Luminosity LHC (HL-LHC), demand novel non-invasive beam diagnostics. As a part of the HL-LHC project a Beam Gas Curtain monitor (BGC), a gas jet-based fluorescence transverse profile monitor, is being developed. The BGC uses a supersonic gas jet sheet that traverses the beam at 45° and visualizes a two-dimensional beam-induced fluorescent image. The principle of observing photons created by fluorescence makes the monitor insensitive to present electric or magnetic fields. Therefore, the monitor is well suited for high-intensity beams such as low-energy electron beam of Hollow Electron Lens (HEL), and HL-LHC proton beam, either as a profile or an overlap monitor. This talk will focus on the first gas jet measured transverse profile of the 7keV hollow electron beam. The measurements were carried out at the Electron Beam Test Stand at CERN testing up to 5A beam for HEL. A comparison with Optical Transition Radiation measurements shows consistency with the BGC results. The BGC installation of January 2023 at LHC is shown, including past results from distributed gas fluorescence tests.
	Slides WE3I01 [7.338 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2023-WE3I01
About •	Received ※ 06 September 2023 — Revised ※ 08 September 2023 — Accepted ※ 27 September 2023 — Issue date ※ 02 October 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEP019	Study of Single Wire Scanner Monitor for FETS-FFA Test Ring	simulation, proton, scattering, linac	377
	E. Yamakawa, S. Machida, A. Pertica, D.W. Posthuma de Boer STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom Y. Ishi Kyoto University, Research Reactor Institute, Osaka, Japan A.P. Letchford STFC/RAL, Chilton, Didcot, Oxon, United Kingdom T. Uesugi Kyoto University, Institute for Integrated Radiation and Nuclear Science, Osaka, Japan
	To confirm the use of Fixed Field Alternating gradient accelerator (FFA) as a high power pulsed neutron spallation source, a prototype called FETS-FFA is studied at Rutherford Laboratory (RAL). A single Wire Scanner Monitor (WSM) is planned to be used to measure a beam position and a beam profile in the ring. One of the concerns of this monitor is the thermal damage on the Carbon Nano Tube (CNT) wire due to high energy deposition of low energy proton beam in FETS-FFA (3 - 12 MeV). Furthermore, to measure a beam profile during beam acceleration in the ring, a diameter of CNT wire needs to be smaller than the orbit displacements in turns. To confirm whether a single WSM is suitable for FETS-FFA ring, two different beam tests were performed at RAL and at the Institute for Integrated Radiation and Nuclear Science, Kyoto University (KURNS). Both measurements demonstrated that the single WSM is applicable for FETS-FFA ring if the diameter of CNT is smaller than the orbit separation in turns. In this paper, the detail of the design study of the single WSM as well as the performance tests are presented.
	Poster WEP019 [8.196 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2023-WEP019
About •	Received ※ 05 September 2023 — Revised ※ 08 September 2023 — Accepted ※ 25 September 2023 — Issue date ※ 01 October 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEP031	Image Acquisition System for the Injection Dump at the Spallation Neutron Source	controls, shielding, LabView, radiation	421
	W. Blokland ORNL, Oak Ridge, Tennessee, USA N.J. Evans, A.R. Oguz, W.D. Willis ORNL RAD, Oak Ridge, Tennessee, USA
	Funding: This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). We describe the Image Acquisition system for the Injection Dump. This system visualizes the different beamlets, on the vacuum window after the H⁻ beam is stripped of its electrons by two stripper foils. One beamlet is from H⁻ with its electrons stripped by the first foil and the second beamlet has it final electron stripped by the second foil. We used the PXI platform to implement the data-acquisition including timing decoder. We describe the hardware and software for the system. We use a standard non-radhard GigE camera to acquire the image from the luminescent coating on the dump vacuum window. To lower the radiation damage to the camera, we shield it with stainless steel blocks. We present radiation measurements before and after shielding. We also show the radiation damage over time to estimate the camera’s lifetime.
	Poster WEP031 [1.267 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2023-WEP031
About •	Received ※ 06 September 2023 — Revised ※ 11 September 2023 — Accepted ※ 14 September 2023 — Issue date ※ 27 September 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

MOP008

Consideration of Beam Instrumentation for SOLARIS Linac Upgrade

linac, diagnostics, lattice, emittance

45

A.I. Wawrzyniak, J.B. Biernat, R. Panaś, J.J. Wiechecki, M.T. Ünal
NSRC SOLARIS, Kraków, Poland
A. Curcio
LNF-INFN, Frascati, Italy

SOLARIS linac currently operates at 540 MeV and is used as an injector to the storage ring, where after the accumulation the energy is ramped up to 1.5 GeV via two active RF cavities. Top-up injection would be of extreme benefits for user operation, therefore a new 1.5 GeV linac is being designed. The idea is to replace the current machine without infrastructural interventions in terms of tunnel expansion. Performed studies demonstrate that the best solution is provided by a Hybrid S-band/C-band LINAC. One of the main goals is to achieve bunch compression below the picosecond level and low-emittance beams for a future short-pulse facility or a Free Electron Laser. Within this presentation the results of performed simulations will be presented together with the concept of different diagnostics as BPMs, current transformers, YAG screens, coherent diffraction radiation monitor distribution.

DOI •

reference for this paper ※ doi:10.18429/JACoW-IBIC2023-MOP008

About •

Received ※ 08 September 2023 — Revised ※ 09 September 2023 — Accepted ※ 13 September 2023 — Issue date ※ 27 September 2023

Cite •

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

MOP013

Expansion of the MTCA Based Direct Sampling LLRF at MedAustron for Hadron Synchrotron Applications

synchrotron, pick-up, diagnostics, hadron

63

M. Wolf, M. Cerv, C. Kurfürst, S. Myalski, M. Repovž, C. Schmitzer
EBG MedAustron, Wr. Neustadt, Austria
A. Bardorfer, B. Baričevič, P. Leban, P. Paglovec, M. Škabar
I-Tech, Solkan, Slovenia

The MedAustron Ion Therapy Centre is a synchrotron-based particle therapy facility located in Lower Austria, which delivers proton and carbon ion beams for cancer treatments. Currently the facility treats over 400 patients per year and is expected to double this number in the future. Six years since the start of clinical operation, MedAustron is experiencing end-of-life issues concerning the digital Low Level RF components in the injector and the synchrotron. Replacements for these applications are under development and the chosen hardware is suitable to also update multiple beam diagnostic devices in the facility. Main targets for updates are the Schottky monitors, which were never properly integrated into the MedAustron Control system and the position pickup measurement system, which currently does not support turn by turn measurements. Comparison measurements with other state of the art diagnostic devices are ongoing to demonstrate the capabilities of the generic hardware. Furthermore, these measurements should show the increased usability and diagnostic potential compared to the legacy devices.

DOI •

reference for this paper ※ doi:10.18429/JACoW-IBIC2023-MOP013

About •

Received ※ 07 September 2023 — Revised ※ 09 September 2023 — Accepted ※ 13 September 2023 — Issue date ※ 16 September 2023

Cite •

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

MOP022

Replacement of the Single-Pass BPM System with MicroTCA.4-based Versatile Electronics at SPring-8

electron, electronics, kicker, timing

74

H. Maesaka, N. Hosoda, S. Takano
RIKEN SPring-8 Center, Hyogo, Japan
H. Dewa, T. Fujita, N. Hosoda, H. Maesaka, M. Masaki, S. Takano
JASRI, Hyogo, Japan

We have developed MicroTCA.4-based versatile BPM readout electronics for the SPring-8 upgrade project, SPring-8-II (*). The input signals are processed by an rf front-end rear transition module (RTM) with band-pass filters, amplifiers, and step attenuators and digitized by 16-bit 370 MSPS high-speed digitizers on an advanced mezzanine card (AMC). The field-programmable gate array (FPGA) on the AMC calculates both single-pass and COD beam positions. The current BPM system at SPring-8 consists of approximately twenty single-pass dedicated BPMs and over two hundred other COD dedicated ones. In advance of SPring-8-II, so far, we renewed half of the single-pass dedicated BPM electronics to the MicroTCA.4. A graphical user interface (GUI) for the new BPM system was also developed and ready for tuning. The single-pass BPM resolution was confirmed to be better than 100 um for a 100 pC single bunch, sufficient for SPring-8-II. The other existing single-pass BPM electronics will also be renewed this summer. The full renewal of remaining COD dedicated BPM electronics to the versatile MicroTCA.4 ones is planned in the subsequent years before the construction of SPring-8-II.
(*) H. Maesaka et al., "Development of MTCA.4-based BPM Electronics for SPring-8 Upgrade", Proc. IBIC’19, doi:10.18429/JACoW-IBIC2019-WEBO03

Poster MOP022 [1.074 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-IBIC2023-MOP022

About •

Received ※ 06 September 2023 — Revised ※ 07 September 2023 — Accepted ※ 14 September 2023 — Issue date ※ 30 September 2023

Cite •

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

MOP037

Tune Feedback at the Canadian Light Source

feedback, quadrupole, operation, storage-ring

106

W.A. Wurtz, C.K. Baribeau, A.M. Duffy
CLS, Saskatoon, Saskatchewan, Canada

In order to maintain good injection efficiency for top-up operation at the Canadian Light Source, we must keep the betatron tunes constant even as changes in insertion device fields cause the tunes to vary. To meet this requirement, we implemented a tune feedback system. We measure the tunes at a rate of 1 Hz using Dimtel bunch-by-bunch systems. The transverse feedback function of the bunch-by-bunch systems provides tune measurements without disturbing the electron beam. We adjust two quadrupole families at a rate of 0.25 Hz to control the horizontal and vertical tunes. In this article we describe the tune feedback system, its development and its performance. The system has proven to be very robust, enabling reliable top-up operation.

Poster MOP037 [1.284 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-IBIC2023-MOP037

About •

Received ※ 24 August 2023 — Revised ※ 07 September 2023 — Accepted ※ 14 September 2023 — Issue date ※ 21 September 2023

Cite •

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

MOP044

"Instantaneous" Lifetime Measurement in Storage Ring with Top-Up Injection

operation, storage-ring, electron, collider

125

I. Pinayev
BNL, Upton, New York, USA

Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-SC0012704 with the U.S. Department of Energy
Top-up operation becomes routine in the light sources. The goal of the top-up operation is to keep the current of the circulating beam stable to avoid variations of the heat load on the beamline optics. It is also considered for the electron-ion collider to maintain the polarization of the electron beam. Frequent re-injection makes measurement of the beam lifetime very difficult if possible. Since, only part of the bunch train is refreshed during the injection cycle then the distribution of the bunch charges in the train has a characteristic saw-tooth distribution. The slope of saw tooth and step in the bunch charge distribution is defined by the lifetime and filling frequency. Both parameters can be used for the measurement. The data for processing can be obtained either from fast current transformer or from the raw ADC signal from beam position monitor. In this paper we present the theoretical considerations as well as experimental data from NSLS-II storage ring.

Poster MOP044 [0.284 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-IBIC2023-MOP044

About •

Received ※ 25 August 2023 — Revised ※ 10 September 2023 — Accepted ※ 13 September 2023 — Issue date ※ 18 September 2023

Cite •

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

WE3I01

Gas Jet-Based Fluorescence Profile Monitor for Low Energy Electrons and High Energy Protons at LHC

electron, experiment, photon, distributed

312

O. Sedláček, A.R. Churchman, A. Rossi, G. Schneider, C.C. Sequeiro, K. Sidorowski, R. Veness
CERN, Meyrin, Switzerland
M. Ady, S. Mazzoni, M. Sameed
European Organization for Nuclear Research (CERN), Geneva, Switzerland
P. Forck, S. Udrea
GSI, Darmstadt, Germany
O. Sedláček, O. Stringer, C.P. Welsch, H.D. Zhang
The University of Liverpool, Liverpool, United Kingdom
O. Sedláček, O. Stringer, C.P. Welsch, H.D. Zhang
Cockcroft Institute, Warrington, Cheshire, United Kingdom
A. Webber-Date
Cockcroft Institute, University of Liverpool, Liverpool, United Kingdom

The ever-developing accelerator capabilities of increasing beam intensity, e.g. for High Luminosity LHC (HL-LHC), demand novel non-invasive beam diagnostics. As a part of the HL-LHC project a Beam Gas Curtain monitor (BGC), a gas jet-based fluorescence transverse profile monitor, is being developed. The BGC uses a supersonic gas jet sheet that traverses the beam at 45° and visualizes a two-dimensional beam-induced fluorescent image. The principle of observing photons created by fluorescence makes the monitor insensitive to present electric or magnetic fields. Therefore, the monitor is well suited for high-intensity beams such as low-energy electron beam of Hollow Electron Lens (HEL), and HL-LHC proton beam, either as a profile or an overlap monitor. This talk will focus on the first gas jet measured transverse profile of the 7keV hollow electron beam. The measurements were carried out at the Electron Beam Test Stand at CERN testing up to 5A beam for HEL. A comparison with Optical Transition Radiation measurements shows consistency with the BGC results. The BGC installation of January 2023 at LHC is shown, including past results from distributed gas fluorescence tests.

Slides WE3I01 [7.338 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-IBIC2023-WE3I01

About •

Received ※ 06 September 2023 — Revised ※ 08 September 2023 — Accepted ※ 27 September 2023 — Issue date ※ 02 October 2023

Cite •

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

WEP019

Study of Single Wire Scanner Monitor for FETS-FFA Test Ring

simulation, proton, scattering, linac

377

E. Yamakawa, S. Machida, A. Pertica, D.W. Posthuma de Boer
STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
Y. Ishi
Kyoto University, Research Reactor Institute, Osaka, Japan
A.P. Letchford
STFC/RAL, Chilton, Didcot, Oxon, United Kingdom
T. Uesugi
Kyoto University, Institute for Integrated Radiation and Nuclear Science, Osaka, Japan

To confirm the use of Fixed Field Alternating gradient accelerator (FFA) as a high power pulsed neutron spallation source, a prototype called FETS-FFA is studied at Rutherford Laboratory (RAL). A single Wire Scanner Monitor (WSM) is planned to be used to measure a beam position and a beam profile in the ring. One of the concerns of this monitor is the thermal damage on the Carbon Nano Tube (CNT) wire due to high energy deposition of low energy proton beam in FETS-FFA (3 - 12 MeV). Furthermore, to measure a beam profile during beam acceleration in the ring, a diameter of CNT wire needs to be smaller than the orbit displacements in turns. To confirm whether a single WSM is suitable for FETS-FFA ring, two different beam tests were performed at RAL and at the Institute for Integrated Radiation and Nuclear Science, Kyoto University (KURNS). Both measurements demonstrated that the single WSM is applicable for FETS-FFA ring if the diameter of CNT is smaller than the orbit separation in turns. In this paper, the detail of the design study of the single WSM as well as the performance tests are presented.

Poster WEP019 [8.196 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-IBIC2023-WEP019

About •

Received ※ 05 September 2023 — Revised ※ 08 September 2023 — Accepted ※ 25 September 2023 — Issue date ※ 01 October 2023

Cite •

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

WEP031

Image Acquisition System for the Injection Dump at the Spallation Neutron Source

controls, shielding, LabView, radiation

421

W. Blokland
ORNL, Oak Ridge, Tennessee, USA
N.J. Evans, A.R. Oguz, W.D. Willis
ORNL RAD, Oak Ridge, Tennessee, USA

Funding: This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE).
We describe the Image Acquisition system for the Injection Dump. This system visualizes the different beamlets, on the vacuum window after the H⁻ beam is stripped of its electrons by two stripper foils. One beamlet is from H⁻ with its electrons stripped by the first foil and the second beamlet has it final electron stripped by the second foil. We used the PXI platform to implement the data-acquisition including timing decoder. We describe the hardware and software for the system. We use a standard non-radhard GigE camera to acquire the image from the luminescent coating on the dump vacuum window. To lower the radiation damage to the camera, we shield it with stainless steel blocks. We present radiation measurements before and after shielding. We also show the radiation damage over time to estimate the camera’s lifetime.

Poster WEP031 [1.267 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-IBIC2023-WEP031

About •

Received ※ 06 September 2023 — Revised ※ 11 September 2023 — Accepted ※ 14 September 2023 — Issue date ※ 27 September 2023

Cite •

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