Author/Authors :
Petit، نويسنده , , M. and Ethvignot، نويسنده , , T. and Granier، نويسنده , , T. and Haight، نويسنده , , R.C. and OʹDonnell، نويسنده , , J.M. and Rochman، نويسنده , , D. and Wender، نويسنده , , S.A. and Bond، نويسنده , , E.M. and Bredeweg، نويسنده , , T.A. and Vieira، نويسنده , , D.J. and Wilhelmy، نويسنده , , J.B. and Danon، نويسنده , , Y.، نويسنده ,
Abstract :
Standard techniques of event-by-event detection of fission may fail when operated in high γ -ray or particle radiation environments. This is the case within the 800 MeV proton-driven lead slowing-down neutron spectrometer at LANSCE where standard fission detectors are found to be inoperable for microseconds to milliseconds after each proton pulse. To overcome this problem, a simple fission fragment detector based on compensated photovoltaic cells has been developed. The compensated detector has lower susceptibility to the strong γ -flash and can recover much faster than an uncompensated detector. This detector is well adapted to applications involving the detection of fission in regions where high intensity γ -ray and/or particle radiation fields exist.
Keywords :
fission , Lead slowing-down spectrometer , Fission detection , Photovoltaic cells , Compensated detector
