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Coplanar anode implementation in com...

Kiff, Scott Douglas.

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Coplanar anode implementation in compressed xenon ionization chambers.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Coplanar anode implementation in compressed xenon ionization chambers./
Author:	Kiff, Scott Douglas.
Description:	172 p.
Notes:	Adviser: Zhong He.
Contained By:	Dissertation Abstracts International68-02B.
Subject:	Engineering, Nuclear. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3253311

Coplanar anode implementation in compressed xenon ionization chambers.
Kiff, Scott Douglas.

Coplanar anode implementation in compressed xenon ionization chambers. - 172 p.

Adviser: Zhong He.

Thesis (Ph.D.)--University of Michigan, 2007.

This dissertation examines the problem of microphonic degradation of high-pressure xenon ionization chambers' energy spectra. A detector design that utilizes coplanar anodes is proposed to mitigate this problem, and an optimization study finds the best geometry given some constraints on the system. A radial position-sensing method is developed from theory and implemented in experiments, demonstrating usefulness in the areas of hardware diagnostics and energy spectrum enhancement. Detailed simulations quantify the effects of various physical processes on the measured energy spectrum; the processes that degrade the photopeak most severely also show promise for improvement via design and operational changes. Simulations show multiple-site events are undesirable due to resolution degradation.Subjects--Topical Terms:

1043651
Engineering, Nuclear.

Coplanar anode implementation in compressed xenon ionization chambers.
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005 20110704
008 110704s2007 ||||||||||||||||| ||eng d
035 $a (UMI)AAI3253311
035 $a AAI3253311
040 $a UMI $c UMI
100 1 $a Kiff, Scott Douglas. $3 1282214
245 1 0 $a Coplanar anode implementation in compressed xenon ionization chambers.
300 $a 172 p.
500 $a Adviser: Zhong He.
500 $a Source: Dissertation Abstracts International, Volume: 68-02, Section: B, page: 1280.
502 $a Thesis (Ph.D.)--University of Michigan, 2007.
520 $a This dissertation examines the problem of microphonic degradation of high-pressure xenon ionization chambers' energy spectra. A detector design that utilizes coplanar anodes is proposed to mitigate this problem, and an optimization study finds the best geometry given some constraints on the system. A radial position-sensing method is developed from theory and implemented in experiments, demonstrating usefulness in the areas of hardware diagnostics and energy spectrum enhancement. Detailed simulations quantify the effects of various physical processes on the measured energy spectrum; the processes that degrade the photopeak most severely also show promise for improvement via design and operational changes. Simulations show multiple-site events are undesirable due to resolution degradation.
520 $a A hydrogen cooling admixture is implemented to improve energy resolution after detailed simulations predict advantageous performance changes. The detector linearity is shown to be quite good over the range tested, 80-1330 keV. The best measured energy resolution is 4.2% FWHM at 662 keV, which is near the range that would be considered competitive with the less-rugged detectors employing Frisch grids.
590 $a School code: 0127.
650 4 $a Engineering, Nuclear. $3 1043651
650 4 $a Physics, Nuclear. $3 1019065
650 4 $a Physics, Radiation. $3 1019212
690 $a 0552
690 $a 0610
690 $a 0756
710 2 $a University of Michigan. $3 777416
773 0 $t Dissertation Abstracts International $g 68-02B.
790 $a 0127
790 1 0 $a He, Zhong, $e advisor
791 $a Ph.D.
792 $a 2007
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3253311