Title:
放射線検出器
Document Type and Number:
Japanese Patent JP2007520865
Kind Code:
A
Abstract:
The present invention provides a radiation detector in which primary electrons are released into a gas by ionizing radiation from a radiation source ( 10 ) and are caused to drift to read-out electrodes ( 1 ) by means of an electric field ( 2 ) generated by applying a negative tension to a drifting electrode ( 11 ) located near the radiation source ( 10 ), characterized in that it comprises three sets of longitudinal electrodes ( 1 ) forming three superposed planes which are substantially perpendicular to said electric field ( 2 ), the longitudinal electrodes ( 1 ) in the respective planes being applied progressively positive tensions relatively to the drifting electrode ( 11 ) when going from the plane ( 4 ) closest to the drifting electrode to the plane ( 4 '') farthest from the drifting electrode, said plane ( 4 '') farthest from the drifting electrode being applied a positive tension.
Inventors:
Dick, lewis
Do Oliveira, Louis
Do Oliveira, Louis
Application Number:
JP2006551936A
Publication Date:
July 26, 2007
Filing Date:
February 03, 2004
Export Citation:
Assignee:
Organisation Europeenne pour la Recherche Nucleaire
International Classes:
H01J47/02; G01T1/18; H01J47/06
Attorney, Agent or Firm:
Yasunori Otsuka
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Osamu Shimoyama
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Osamu Shimoyama