An EDM measurement with a new comagnetometer and a high density UCN source

Authors :: Daiki Nishimura
Sunchan Jeong
Yasuhiro Masuda
L. Lee
Kichiji Hatanaka
Mototsugu Mihara
A. Miller
C. A. Davis
K. Matsuta
W. T. H. van Oers
A. Konaka
Koichiro Asahi
E. Korkmaz
Ryohei Matsumiya
T. Dawson
Jonathan W. Martin
L. Buckman
Shinsuke Kawasaki
Yutaka Watanabe
W. D. Ramsay
T. Adachi
C. Bidinosti
Source :: AIP Conference Proceedings.
Publication Year :: 2013
Publisher :: AIP, 2013.
Abstract: We discuss a new neutron EDM measurement of 10−28 e cm. For the improved UCN density, we will apply a new spallation UCN source of superfluid He. For magnetometry, 129Xe nuclear spins are injected into a EDM cell, to supress GPE. Performance of the prototype KEK-RCNP UCN source, and the obtained Ramsey resonance spectra are presented.