Spiral silicon drift detectors

Conference · Wed Feb 01 04:00:00 EST 1989 · IEEE Trans. Nucl. Sci.; (United States)

OSTI ID:6284217

Rehak, P; Gatti, E; Longoni, A; Sampietro, M; Holl, P; Lutz, G; Kemmer, J; Prechtal, U; Ziemann, T

An advanced large area silicon photodiode (and X-ray detector), called Spiral Drift Detector, was designed, produced and tested. The Spiral Detector belongs to the family of silicon drift detectors and is an improvement of the well known Cylindrical Drift Detector. In both detectors, signal electrons created in silicon by fast charged particles or photons are drifting toward a practically point-like collection anode. The capacitance of the anode is therefore kept at the minimum (0.1pF). The concentric rings of the cylindrical detector are replaced by a continuous spiral in the new detector. The spiral geometry detector design leads to a decrease of the detector leakage current. In the spiral detector all electrons generated at the silicon-silicon oxide interface are collected on a guard sink rather than contributing to the detector leakage current. The decrease of the leakage current reduces the parallel noise of the detector. This decrease of the leakage current and the very small capacitance of the detector anode with a capacitively matched preamplifier may improve the energy resolution of Spiral Drift Detectors operating at room temperature down to about 50 electrons rms. This resolution is in the range attainable at present only by cooled semiconductor detectors.

• Research Organization: Brookhaven Nat. Lab., Upton, NY (US); Politecnico di Milano, Milano (IT); Max-Planck-Institut fur Physik und Astrophysik, Munchen (DE); MBB ZTA12, Postfach 80 11 49, 8000 Munchen 80 (DE)
• OSTI ID: 6284217
• Report Number(s): CONF-881103-
• Conference Information: Journal Name: IEEE Trans. Nucl. Sci.; (United States) Journal Volume: 36:1
• Country of Publication: United States
• Language: English

Related Subjects

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46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANODES
BARYONS
CHALCOGENIDES
CHARGED PARTICLES
CONFIGURATION
CURRENTS
DESIGN
DRIFT CHAMBERS
ELECTRIC CURRENTS
ELECTRODES
ELECTROMAGNETIC RADIATION
ELECTRONS
ELEMENTARY PARTICLES
FAST NEUTRONS
FERMIONS
GEOMETRY
HADRONS
INTERFACES
IONIZING RADIATIONS
LEAKAGE CURRENT
LEPTONS
MATHEMATICS
MEASURING INSTRUMENTS
MULTIWIRE PROPORTIONAL CHAMBERS
NEUTRONS
NUCLEONS
OXIDES
OXYGEN COMPOUNDS
PARTICLE PRODUCTION
PERFORMANCE
PHOTODIODES
PROPORTIONAL COUNTERS
RADIATION DETECTORS
RADIATIONS
SEMICONDUCTOR DETECTORS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
SI SEMICONDUCTOR DETECTORS
SILICON COMPOUNDS
SILICON OXIDES
SPIRAL CONFIGURATION
X RADIATION