Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Research › peer-review
Optical Diagnostics of 1 MeV Proton Beam in Argon Stripping Target of a Tandem Accelerator. / Makarov, A. N.; Savinov, S. S.; Shchudlo, I. M. et al.
27th Russian Particle Accelerator Conference, RuPAC 2021. ed. / Maksim Kuzin; Volker R W Schaa. CERN, 2021. p. 393-395 WEPSC28 (CERN-Proceedings; Vol. 2021-September).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Research › peer-review
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TY - GEN
T1 - Optical Diagnostics of 1 MeV Proton Beam in Argon Stripping Target of a Tandem Accelerator
AU - Makarov, A. N.
AU - Savinov, S. S.
AU - Shchudlo, I. M.
AU - Taskaev, S. Yu
N1 - Funding Information: This research was supported by Russian Science Foundation, grant No. 19-72-30005. A.N.Makarov@inp.nsk.su Publisher Copyright: © 27th Russian Particle Accelerator Conference, RuPAC 2021. All rights reserved.
PY - 2021
Y1 - 2021
N2 - A neutron source for boron neutron capture therapy based on a vacuum-insulated tandem accelerator has been developed and operates at Budker Institute of Nuclear Physics. Conducting a ~10 mm proton beam with a power of up to 20 kW through a system of accelerating electrodes and 16 mm argon stripping tube is not an easy task. Any mistake made by operator or a malfunction of the equipment responsible for the correction of the beam position in the ion beam line can lead to permanent damage to the accelerator when a powerful beam hits the surface of the stripping tube or diaphragms of the electrodes. To determine the position of the proton beam inside the argon stripping tube, optical diagnostics have been developed based on the Celestron Ultima 80-45 telescope and a cooled mirror located at an angle of 45° to the beam axis in the straight-through channel of the bending magnet. The cooled mirror, in addition to the optical function, also performs the function of measuring the neutral current due to the electrical isolation of the mirror and the extraction of secondary electrons from its surface. The luminescence of a beam in the optical range, observed with the help of the developed diagnostics, made it possible for the first time to determine beam size and position inside the stripping tube with an accuracy of 1 mm. The light sensitivity of applied optical elements is sufficient for using a shutter speed from 2 to 20 ms to obtain a color image of the beam in real time. This makes it possible to realize a fast interlock on the event of a sudden displacement of the beam.
AB - A neutron source for boron neutron capture therapy based on a vacuum-insulated tandem accelerator has been developed and operates at Budker Institute of Nuclear Physics. Conducting a ~10 mm proton beam with a power of up to 20 kW through a system of accelerating electrodes and 16 mm argon stripping tube is not an easy task. Any mistake made by operator or a malfunction of the equipment responsible for the correction of the beam position in the ion beam line can lead to permanent damage to the accelerator when a powerful beam hits the surface of the stripping tube or diaphragms of the electrodes. To determine the position of the proton beam inside the argon stripping tube, optical diagnostics have been developed based on the Celestron Ultima 80-45 telescope and a cooled mirror located at an angle of 45° to the beam axis in the straight-through channel of the bending magnet. The cooled mirror, in addition to the optical function, also performs the function of measuring the neutral current due to the electrical isolation of the mirror and the extraction of secondary electrons from its surface. The luminescence of a beam in the optical range, observed with the help of the developed diagnostics, made it possible for the first time to determine beam size and position inside the stripping tube with an accuracy of 1 mm. The light sensitivity of applied optical elements is sufficient for using a shutter speed from 2 to 20 ms to obtain a color image of the beam in real time. This makes it possible to realize a fast interlock on the event of a sudden displacement of the beam.
UR - http://www.scopus.com/inward/record.url?scp=85130383762&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/85d7bed0-afbd-3e44-8665-c3702e16206d/
U2 - 10.18429/JACoW-RuPAC2021-WEPSC28
DO - 10.18429/JACoW-RuPAC2021-WEPSC28
M3 - Conference contribution
AN - SCOPUS:85130383762
SN - 9783954502400
T3 - CERN-Proceedings
SP - 393
EP - 395
BT - 27th Russian Particle Accelerator Conference, RuPAC 2021
A2 - Kuzin, Maksim
A2 - Schaa, Volker R W
PB - CERN
T2 - 27th Russian Particle Accelerator Conference, RuPAC 2021
Y2 - 27 September 2021 through 1 October 2021
ER -
ID: 36161610