Speaker
Dr
Akimasa Ishikawa
(Saga Univ.)
Description
Abstract:
Gating, a suppression system of ion back drift, is one of the most
important issues for ILC TPC. Wire was used as a gating system but a
large ExB effect may degrate the position resolution in high magnetic
field at ILC. GEM is a promissing candidate of the gating system since
the ExB effect is smaller due to its fine structure. But the electron
transmission efficinecy is not so high for some gas mixtures with
standard GEM. We present a simulation study of the GEM gating system
with various conditions.
