Upgraded Fermi chopper of BL01-4SEASONS at J-PARC

Nakamura, Mitsutaka ; Kajimoto, Ryoichi ; Inamura, Yasuhiro ; Aoyama, Kazuhiro; Kambara, Wataru*; Kawakami, Kazuhiro; Kubo, Naoya; Kamazawa, Kazuya*; Ikeuchi, Kazuhiko*; Iida, Kazuki*; Ishikado, Motoyuki*

We have developed a newly designed Fermi chopper for MLF/BL01 4SEASONS, and has been open for users since March 2015. It was found that the gain factor achieved in the low-energy region is more than 10, thus, we succeeded to greatly improve the measurement efficiency of 4SEASONS. In this presentation we will show the details of both specification and design for a newly-developed Fermi chopper.

Language	:	Japanese
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Meeting title	:	日本中性子科学会第15回年会(JSNS 2015)
Held date	:	2015/12
Location (city)	:	和光
Location (country)	:	日本
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Keywords	:	no keyword
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Registration No. : BB20152361
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