Simultaneous measurement of thermal and ionization signals in a 60 g cryogenic germanium detector

Conference · Thu Oct 01 04:00:00 EDT 1992 · IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:6704813

Barnes, Jr, P D; Ellman, B; Lange, A E; Ing, K; Ross, R R; Sadoulet, B; Shutt, T; Stubbs, C; Wang, N; White, S; Yvon, D ^[1]

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1. California Univ., Berkeley, CA (United States). Dept. of Physics

In this paper, the authors present new results from a cryogenic detector instrumented to measure both the phonon and ionization signals. The detector is a 60 g Ge disk operated at 30 mK. The authors have made significant improvements in the electronics noise, threshold, and energy resolution of the device. The baseline FWHM, corresponding to the total system noise, is 1.55 keV in the phonon channel and 1.59 keV in the ionization channel. At 60 keV the FWHM are 1.9 keV and 1.7 keV in the phonon and ionization channels, respectively. The authors have demonstrated for the first time a discrimination between electron recoils and nuclear recoils at low energy.

• OSTI ID: 6704813
• Report Number(s): CONF-911106--
• Conference Information: Journal Name: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States) Journal Volume: 39:5
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430303* -- Particle Accelerators-- Experimental Facilities & Equipment
440104 -- Radiation Instrumentation-- High Energy Physics Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CRYOGENICS
ELECTROMAGNETIC RADIATION
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
GE SEMICONDUCTOR DETECTORS
HIGH-PURITY GE DETECTORS
IONIZATION
LEPTONS
MEASURING INSTRUMENTS
PERFORMANCE
PHONONS
QUASI PARTICLES
RADIATION DETECTORS
RADIATIONS
RECOILS
SEMICONDUCTOR DETECTORS
THERMAL RADIATION