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Title: Pulse Saturation Effects In Cosmic Ray Vetoing

Abstract

The anticosmic veto system developed around the extended range HPGe detector is described. In order to maximize the vetoing effect in the low-energy Ge spectrum region, the Ge fast output was amplified and the subsequent CFD threshold was set above background ({approx}20 keV). The timing curve derived with this setup exhibited unusual features. Two peaks appeared at the distance of the 125 ns. The second peak appeared to be ''prompt'' on the position where the coincidence events from positron annihilation (22Na) occur. The apparently superluminal nature of the first peak is discussed in terms of saturation of the spectrum in the fast amplifier.

Authors:
; ; ;  [1];  [2]
  1. Department of Physics, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovica 4, 21 000 Novi Sad (Serbia)
  2. Faculty of Physics, University of Belgrade, Studentski trg 12-16, 11 000 Belgrade (Serbia)
Publication Date:
OSTI Identifier:
21057296
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 899; Journal Issue: 1; Conference: 6. international conference of the Balkan Physical Union, Istanbul (Turkey), 22-26 Aug 2006; Other Information: DOI: 10.1063/1.2733053; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; AMPLIFIERS; ANNIHILATION; ANTICOINCIDENCE; BACKGROUND RADIATION; COINCIDENCE SPECTROMETRY; COSMIC RADIATION; GAMMA SPECTRA; GAMMA SPECTROMETERS; HIGH-PURITY GE DETECTORS; KEV RANGE; POSITRONS; SODIUM 22

Citation Formats

Bikit, I., Mrdja, D., Veskovic, M., Forkapic, S., and Anicin, I.. Pulse Saturation Effects In Cosmic Ray Vetoing. United States: N. p., 2007. Web. doi:10.1063/1.2733053.
Bikit, I., Mrdja, D., Veskovic, M., Forkapic, S., & Anicin, I.. Pulse Saturation Effects In Cosmic Ray Vetoing. United States. doi:10.1063/1.2733053.
Bikit, I., Mrdja, D., Veskovic, M., Forkapic, S., and Anicin, I.. Mon . "Pulse Saturation Effects In Cosmic Ray Vetoing". United States. doi:10.1063/1.2733053.
@article{osti_21057296,
title = {Pulse Saturation Effects In Cosmic Ray Vetoing},
author = {Bikit, I. and Mrdja, D. and Veskovic, M. and Forkapic, S. and Anicin, I.},
abstractNote = {The anticosmic veto system developed around the extended range HPGe detector is described. In order to maximize the vetoing effect in the low-energy Ge spectrum region, the Ge fast output was amplified and the subsequent CFD threshold was set above background ({approx}20 keV). The timing curve derived with this setup exhibited unusual features. Two peaks appeared at the distance of the 125 ns. The second peak appeared to be ''prompt'' on the position where the coincidence events from positron annihilation (22Na) occur. The apparently superluminal nature of the first peak is discussed in terms of saturation of the spectrum in the fast amplifier.},
doi = {10.1063/1.2733053},
journal = {AIP Conference Proceedings},
number = 1,
volume = 899,
place = {United States},
year = {Mon Apr 23 00:00:00 EDT 2007},
month = {Mon Apr 23 00:00:00 EDT 2007}
}