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|Author(s):||Jeffrey S. Nico; T J. Langford; Christopher D. Bass; E J. Beise; D. K. Erwin; Craig Heimbach;|
|Title:||Event Identification in He-3 Proportional Counters Using Risetime Discrimination|
|Published:||April 02, 2013|
|Abstract:||We present a straightforward method for particle identification and background rejection in He-3 proportional counters for use in neutron detection. By measuring the risetime and pulse height of the preamplifier signals, one may define a region in the risetime versus pulse height space where the events are predominately from neutron interactions. For the proportional counters used in this study, there is an alpha-particle rejection of 96%. By applying the same method, we also show an effective rejection of microdischarge noise events that, when passed through a shaping amplifier, are indistinguishable from physical events in the counters. The primary application of this method is in measurements where the signal-to-background for counting neutrons is very low, such as in underground laboratories.|
|Citation:||Nuclear Instruments & Methods in Physics Research|
|Pages:||pp. 51 - 57|
|Keywords:||He-3, neutron detection, proportional counters|
|Research Areas:||Neutron Physics|
|DOI:||http://dx.doi.org/10.1016/j.nama.2013.03.062 (Note: May link to a non-U.S. Government webpage)|
|PDF version:||Click here to retrieve PDF version of paper (751KB)|