Abstract
A novel thin silicon detector for the neutral particle analyzers (NPA)
of the Joint European Torus (JET) is introduced for studying plasma
characteristics during the fusion experiments. The new ion detector would
replace the presently used very thin scintillator - photomultiplier tube
combination. The proposed new NPA detector is based on direct conversion of
charge in silicon and approximate matching of the detector thickness with the
ranges of the observed ions. A thin silicon detector is only weakly sensitive
to photon and neutron backgrounds but detects highly ionizing ions
efficiently. Even high energy gammas deposit only little energy in the thin
detector allowing effective background discrimination through
pulse-height-analysis. Thin silicon strip detectors have been fabricated by
using the silicon-on-insulator (SOI) technology. Fabricated detectors have 6
or 26 ìm thick high resistive silicon bonded on a conductive silicon support.
The thinner detectors are designed to be used for the low energy NPA and the
thicker ones for the high energy NPA. The presentation comprises a short
introduction to the fabricated detector structures, TCAD simulations and
results of the electrical and spectroscopic characterizations.
Original language | English |
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Title of host publication | Proceedings |
Subtitle of host publication | IEEE Nuclear Science Symposium and Medical Imagine Conference, NSS-MIC 2007 |
Place of Publication | Piscataway, NJ, USA |
Publisher | IEEE Institute of Electrical and Electronic Engineers |
Pages | 1482-1485 |
ISBN (Print) | 978-1-4244-0922-8, 978-1-4244-0923-5 |
DOIs | |
Publication status | Published - 2007 |
MoE publication type | A4 Article in a conference publication |
Event | IEEE Nuclear Science Symposium and Medical Imagine Conference, NSS-MIC 2007 - Honolulu, HI, United States Duration: 26 Oct 2007 → 3 Nov 2007 |
Conference
Conference | IEEE Nuclear Science Symposium and Medical Imagine Conference, NSS-MIC 2007 |
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Abbreviated title | NSS-MIC 2007 |
Country/Territory | United States |
City | Honolulu, HI |
Period | 26/10/07 → 3/11/07 |
Keywords
- Neutral particle analyzer
- silicon-on-insulator
- silicon detectors
- ion spectroscopy
- electrical characterization
- pulse-height-analysis