Manufacturing and Operation of the Magnetic Septa for the Slow Beam Extraction From the J-PARC 50 GeV Proton Synchrotron

被引：5

作者：

Muto, Ryotaro ^{[1
]}

Arakaki, Yoshitugu ^{[4
]}

Fan, Kuanjun ^{[4
]}

Ishii, Koji ^{[4
]}

Kiyomichi, Akio ^{[1
]}

Kobayashi, Hitoshi ^{[4
]}

Matsumoto, Hiroshi ^{[4
]}

Murasugi, Shigeru ^{[4
]}

Nakagawa, Hidetoshi ^{[4
]}

Odagiri, Jun-ichi ^{[4
]}

Okamura, Katsuya ^{[4
]}

Sakai, Izumi ^{[2
]}

Sato, Hikaru ^{[3
]}

Sawada, Shin'ya ^{[1
]}

Shirakabe, Yoshihisa ^{[1
]}

Tanaka, Kazuhiro ^{[1
]}

Tokumoto, Shuichi ^{[4
]}

Tomizawa, Masahito ^{[4
]}

Yanaoka, Eiichi ^{[4
]}

机构：

[1] High Energy Accelerator Res Org KEK, Inst Particle & Nucl Studies, Hadron Beam Channel Grp, Tsukuba, Ibaraki 3050801, Japan

[2] Univ Fukui, Fukui 9108507, Japan

[3] Tsukuba Univ Technol, Fac Ind Technol, Tsukuba, Ibaraki 3058520, Japan

[4] KEK, Accelerator Lab, Tokyo, Japan

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2010年 / 20卷 / 03期

关键词：

Accelerator magnets; magnetic septa; particle beam extraction;

D O I：

10.1109/TASC.2010.2040255

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The magnetic septa have been developed for the slow beam extraction from the 50 GeV Proton Synchrotron to the Hadron Experimental Hall at J-PARC (Japan Proton Accelerator Research Complex). The magnetic septa consist of two thin magnetic septa, four medium thick magnetic septa and four thick magnetic septa. The typical operating current is 3000 A and the total kick angle is 77 mrad with the 30 GeV proton beam. All parts of the thin and of the medium thick septum magnets are made of inorganic materials to resist high radiation environment. The positions of the thin and medium thick septa can be aligned remotely in the horizontal range of +/- 5 mm, which enables us to minimize the beam loss at the magnetic septum section. The septa were installed in the synchrotron ring in December, 2008, after a test at KEK (High Energy Accelerator Research Organization), and were successfully operated in the beam time for the slow beam extraction in January and February, 2009, which resulted in the first 30 GeV slow extracted beam delivery to the Hadron Experimental Hall.

引用

页码：336 / 339

页数：4

共 39 条

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