In:
Review of Scientific Instruments, AIP Publishing, Vol. 77, No. 10 ( 2006-10-01)
Kurzfassung:
Thin gap chamber (TGC) is a very thin multiwire proportional chamber of only a few millimeters. It has a quick response (about 20ns), and its production costs are relatively low. TGCs have been used as large area detectors in high energy physics such as Large Electron-Positron collider (LEP) and will be used in the Large Hadron collider (LHC) experiment. However, the characteristics of TGCs under neutrons are not yet clearly understood. As the energy deposits of several MeV neutrons in TGCs are large, the possible effect of these deposits on the operation of the detector is a concern. We studied TGC performance in relation to efficiency, charge distribution, and operation stability using several gas mixtures (CO2∕n-pentane and CF4∕n-pentane) with 2.5 and 14MeV neutron sources at Fusion Neutronics Source (FNS) in Japan Atomic Energy Agency. Operation stability using a CF4 based gas was more than 100 times greater than with CO2 based gas, while the minimum ionizing particle signal gain was almost the same. The detection efficiencies were around 0.1% (14MeV) and 0.02% (2.5MeV). These results are consistent with our simulation studies.
Materialart:
Online-Ressource
ISSN:
0034-6748
,
1089-7623
Sprache:
Englisch
Verlag:
AIP Publishing
Publikationsdatum:
2006
ZDB Id:
209865-9
ZDB Id:
1472905-2
SSG:
11
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