Speaker
Dr
Yasushi Arimoto
(IMSS, KEK)
Description
It is proposed to construct ultra-cold neutron (UCN) source and to perform an experimental search of neutron electric dipole moment (nEDM) at J-PARC in Japan. One of key technique in the proposal is time focusing of UCN beam with so-called "rebuncher"s. In the rebuncher, fast UCNs in a bunch are decelerated and slow ones are accelerated by using a rf spin flipper and a fixed-field-gradient magnet. As the results, a stretched-bunch-length due to time of flight difference in velocity during a transportation will be shortened at an nEDM measurement apparatus and the density of UCN at the apparatus will be increased. The magnet of the rebuncher has a unique feature. Here a development status of the magnet will be described.
Primary author
Dr
Yasushi Arimoto
(IMSS, KEK)
Co-authors
Dr
Akihiko Yoshimi
(RIKEN)
Prof.
Hirohiko Shimizu
(IMSS, KEK)
Dr
Kaoru Taketani
(IMSS, KEK)
Dr
Kenji Mishima
(IMSS, KEK)
Prof.
Koichiro Asahi
(Tokyo Institutes of Technology)
Dr
Masaaki Kitaguchi
(KURRI)
Dr
Satoru Yamashita
(University of Tokyo)
Dr
Takashi Ino
(IMSS, KEK)
Dr
Tamaki Yoshioka
(IMSS, KEK)
Dr
Yoshihisa Iwashita
(ICR, Kyoto University)
Dr
Yoshio Kamiya
(University of Tokyo)
