New measurements of proton beam extinction at J-parc

K. Yoshimura; Y. Hashimoto; Y. Hori; Y. Sato; M. Shimamoto; Y. Takeda; M. Uota; Y. Igarashi; H. Nishiguchi; S. Mihara; M. Aoki; H. Nakai; S. Hikida

New measurements of proton beam extinction at J-parc

K. Yoshimura, Y. Hashimoto, Y. Hori, Y. Sato, M. Shimamoto, Y. Takeda, M. Uota, Y. Igarashi, H. Nishiguchi, S. Mihara, M. Aoki, H. Nakai, S. Hikida

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

Proton beam extinction, defined as a residual to primary ratio of beam intensity, is one of the most important parameters to realize the future muon electron conversion experiment (COMET) proposed at J-PARC. To achieve the required extinction level of 10^-9, we started measuring extinction at main ring (MR) as its first step. According to the various measurements done at the different positions, empty RF buckets of RCS, which were considered to be swept away by the RF chopper, contained about 10^-7 ∼10 ^-5 of the main beam pulse due to chopper inefficiency. We have developed a new beam monitor with improved performance for further studies at the abort line. In addition, we have started new measurements at the Hadron experimental hall by using slow-extracted beam. In this paper, we present recent results and future prospect of beam extinction measurements.

Original language	English
Title of host publication	IPAC 2011 - 2nd International Particle Accelerator Conference
Pages	1242-1244
Number of pages	3
Publication status	Published - 2011
Externally published	Yes
Event	2nd International Particle Accelerator Conference, IPAC 2011 - Kursaal, San Sebastian, Spain Duration: Sept 4 2011 → Sept 9 2011

Publication series

Name	IPAC 2011 - 2nd International Particle Accelerator Conference

Other

Other	2nd International Particle Accelerator Conference, IPAC 2011
Country/Territory	Spain
City	Kursaal, San Sebastian
Period	9/4/11 → 9/9/11

ASJC Scopus subject areas

Nuclear and High Energy Physics

Cite this

Yoshimura, K., Hashimoto, Y., Hori, Y., Sato, Y., Shimamoto, M., Takeda, Y., Uota, M., Igarashi, Y., Nishiguchi, H., Mihara, S., Aoki, M., Nakai, H., & Hikida, S. (2011). New measurements of proton beam extinction at J-parc. In IPAC 2011 - 2nd International Particle Accelerator Conference (pp. 1242-1244). (IPAC 2011 - 2nd International Particle Accelerator Conference).

Yoshimura, K, Hashimoto, Y, Hori, Y, Sato, Y, Shimamoto, M, Takeda, Y, Uota, M, Igarashi, Y, Nishiguchi, H, Mihara, S, Aoki, M, Nakai, H & Hikida, S 2011, New measurements of proton beam extinction at J-parc. in IPAC 2011 - 2nd International Particle Accelerator Conference. IPAC 2011 - 2nd International Particle Accelerator Conference, pp. 1242-1244, 2nd International Particle Accelerator Conference, IPAC 2011, Kursaal, San Sebastian, Spain, 9/4/11.

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title = "New measurements of proton beam extinction at J-parc",

abstract = "Proton beam extinction, defined as a residual to primary ratio of beam intensity, is one of the most important parameters to realize the future muon electron conversion experiment (COMET) proposed at J-PARC. To achieve the required extinction level of 10-9, we started measuring extinction at main ring (MR) as its first step. According to the various measurements done at the different positions, empty RF buckets of RCS, which were considered to be swept away by the RF chopper, contained about 10-7 ∼10 -5 of the main beam pulse due to chopper inefficiency. We have developed a new beam monitor with improved performance for further studies at the abort line. In addition, we have started new measurements at the Hadron experimental hall by using slow-extracted beam. In this paper, we present recent results and future prospect of beam extinction measurements.",

author = "K. Yoshimura and Y. Hashimoto and Y. Hori and Y. Sato and M. Shimamoto and Y. Takeda and M. Uota and Y. Igarashi and H. Nishiguchi and S. Mihara and M. Aoki and H. Nakai and S. Hikida",

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language = "English",

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series = "IPAC 2011 - 2nd International Particle Accelerator Conference",

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T1 - New measurements of proton beam extinction at J-parc

AU - Yoshimura, K.

AU - Hashimoto, Y.

AU - Hori, Y.

AU - Sato, Y.

AU - Shimamoto, M.

AU - Takeda, Y.

AU - Uota, M.

AU - Igarashi, Y.

AU - Nishiguchi, H.

AU - Mihara, S.

AU - Aoki, M.

AU - Nakai, H.

AU - Hikida, S.

PY - 2011

Y1 - 2011

N2 - Proton beam extinction, defined as a residual to primary ratio of beam intensity, is one of the most important parameters to realize the future muon electron conversion experiment (COMET) proposed at J-PARC. To achieve the required extinction level of 10-9, we started measuring extinction at main ring (MR) as its first step. According to the various measurements done at the different positions, empty RF buckets of RCS, which were considered to be swept away by the RF chopper, contained about 10-7 ∼10 -5 of the main beam pulse due to chopper inefficiency. We have developed a new beam monitor with improved performance for further studies at the abort line. In addition, we have started new measurements at the Hadron experimental hall by using slow-extracted beam. In this paper, we present recent results and future prospect of beam extinction measurements.

AB - Proton beam extinction, defined as a residual to primary ratio of beam intensity, is one of the most important parameters to realize the future muon electron conversion experiment (COMET) proposed at J-PARC. To achieve the required extinction level of 10-9, we started measuring extinction at main ring (MR) as its first step. According to the various measurements done at the different positions, empty RF buckets of RCS, which were considered to be swept away by the RF chopper, contained about 10-7 ∼10 -5 of the main beam pulse due to chopper inefficiency. We have developed a new beam monitor with improved performance for further studies at the abort line. In addition, we have started new measurements at the Hadron experimental hall by using slow-extracted beam. In this paper, we present recent results and future prospect of beam extinction measurements.

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M3 - Conference contribution

AN - SCOPUS:84885716335

SN - 9789290833666

T3 - IPAC 2011 - 2nd International Particle Accelerator Conference

SP - 1242

EP - 1244

BT - IPAC 2011 - 2nd International Particle Accelerator Conference

T2 - 2nd International Particle Accelerator Conference, IPAC 2011

Y2 - 4 September 2011 through 9 September 2011

ER -

New measurements of proton beam extinction at J-parc

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