Detector Description
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detector consists of :
2- U-233 is used as a Neutron fissionable material which is coated on the top of metal plate in circular disk that has a diameter of 3cm. U-233 think film is fixed as a part of the detector cathode.
3- Cathode , square copper plate has a dimension of 10x10cm and has a ditance of 1.6 cm from the top of the fist GEM card.
3- GEM cards: the detector has three GEM in square plastic of frame and has dimension of 10x10cm, it is placed parallel to the cathode.