Speaker
Konstantinova Olga
(KEK)
Description
In the J-PARC linac, due to its high intensity H- beam, significant beam loss has been observed at the downstream straight beam line section called ACS (Annular-Coupled Structure linac). The loss is mainly due to a proton which is produced due to double electron stripping of the H^- beam by the residual gas inside the beam pipe, and the titanium beam pipe.
We have developed a detector system consisting of 8 planes of scintillating fiber hodoscopes in order to measure proton tracks emitted from the beam pipe of the J-PARC linac. The system measures positions of the charged particle tracks in a small solid angle, and also measures the time-of-flight of each particle.
We show angular and energy distribututions of the proton tracks measured in 2012-2013. We also show comparison of the results with simulation.
Primary author
Konstantinova Olga
(KEK)
Co-authors
Mr
Akihiko Miura
(Japan Atomic Energy Agency)
Hiroyuki Sako
(Japan Atomic Research Agency)
Dr
Tomofumi Maruta
(KEK)
