TY - GEN
T1 - Measurement of transverse multipole moments of the proton beam in the J-PARC MR
AU - Toyama, T.
AU - Koseki, T.
AU - Kuboki, H.
AU - Okada, M.
AU - Uno, W.
AU - Nakanishi, Y.
AU - Ichikawa, A.
AU - Nakamura, K.
AU - Nakaya, T.
AU - Minamino, A.
N1 - Funding Information:
* Work partially supported by MEXT/JSPS KAKENHI Grant Numbers 25105002 and 16H06288. † email address: takeshi.toyama@kek.jp ‡ Move to a private company
Funding Information:
This work was partially supported by MEXT KA-KENHI Grant Numbers 25105002 and 16H06288.
Publisher Copyright:
© 2017 CC-BY-3.0 and by the respective authors
PY - 2017/7
Y1 - 2017/7
N2 - Transverse multipole moments (quadrupole and more) of the beam may give important information of the beam such as beam sizes, nonlinear resonances and so on. However higher moments are difficult to measure because signal-to-noise-ratio becomes smaller proportional to (x/R)n, (y/R)n, where x: horizontal position of the charged particle, y: vertical position of the charged particle, R: vacuum-duct-radius. In order to increase the SNR and to extend the multipole order, we developed and installed a 16 electrode beam monitor in the J-PARC MR. Principle, results from BEM calculation and wire mapping, and a beam test are presented.
AB - Transverse multipole moments (quadrupole and more) of the beam may give important information of the beam such as beam sizes, nonlinear resonances and so on. However higher moments are difficult to measure because signal-to-noise-ratio becomes smaller proportional to (x/R)n, (y/R)n, where x: horizontal position of the charged particle, y: vertical position of the charged particle, R: vacuum-duct-radius. In order to increase the SNR and to extend the multipole order, we developed and installed a 16 electrode beam monitor in the J-PARC MR. Principle, results from BEM calculation and wire mapping, and a beam test are presented.
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M3 - Conference contribution
AN - SCOPUS:85119658447
T3 - IPAC 2017 - Proceedings of the 8th International Particle Accelerator Conference
SP - 274
EP - 276
BT - IPAC 2017 - Proceedings of the 8th International Particle Accelerator Conference
PB - Joint Accelerator Conferences Website - JACoW
T2 - 8th International Particle Accelerator Conference, IPAC 2017
Y2 - 14 May 2017 through 19 May 2017
ER -