Development of a customized leading-edge discriminator for a planar-type segmented germanium detector

✍ Scribed by N.Y. Kim; J.H. Lee; J.Y. Kim; C.S. Lee; Z.H. Jang

• Book ID: 104065966
• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 190 KB
• Volume: 563
• Category: Article
• ISSN: 0168-9002
• DOI: 10.1016/j.nima.2006.01.139

✦ Synopsis

A customized leading-edge discriminator has been developed for picking up information on the position and the time for a planar-type segmented germanium detector. The discriminator consisted of three stages: a differentiating amplifier, a voltage comparator, and a mono-stable multivibrator. With the present discriminator modules, we examined spectral characteristics for the segmented germanium detector by using uncollimated 662-keV gamma rays. Anode energy spectra in coincidence with cathodes showed that better peak-tototal ratios could be obtained with increasing coincidence fold. Further, a salient feature of the exponential decay in the time difference spectrum between the anode and cathodes was observed to a fair extent.