Large area cylindrical silicon drift detector

Conference · Tue Jan 01 04:00:00 EST 1991

OSTI ID:5759523

Chen, W; Kraner, H; Li, Z; Rehak, P ^[1]; Gatti, E; Longoni, A; Sampietro, M ^[2]; Holl, P; Kemmer, J ^[3]; Faschingbauer, U; Schmitt, B; Woerner, A; Wurm, J P ^[4]

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1. Brookhaven National Lab., Upton, NY (United States)
2. Politecnico di Milano, Milan (Italy)
3. Technische Univ. Muenchen, Garching (Germany) KETEK GmbH, Haimhausen (Germany)
4. Max-Planck-Institut fuer Kernphysik, Heidelberg (Germany)

An advanced silicon drift detector, a large area cylindrical drift detector, was designed, produced, tested and installed in the NA45 experiment. The active area of the detector is practically the total area of a 3 inch diameter wafer. Signal electrons created in the silicon detector by fast charged particles drift radially outside toward an array of 360 anodes located on the periphery of the detector. The drift time measures the radial coordinate of the particle's intersection; the charge sharing between anodes measures the azimuthal coordinate. The detector provides unambiguous pairs of r,{phi} coordinates for events with multiplicities up to several hundred. Its use in the experiment aims at a position resolution of 20 {mu}m (rms) in each direction giving about 2 {center dot} 10{sup 6} two-dimensional elements. There is a small hole in the center of the detector to allow the passage of the noninteracting particle beam. The longest drift distance is about 3 cm. The nominal value of the drift field is 500 V/cm resulting in a maximum drift time of 4 {mu}s.

• Research Organization: Brookhaven National Lab., Upton, NY (United States); Technische Univ. Muenchen, Garching (Germany)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5759523
• Report Number(s): BNL-45022; CONF-911106--75; ON: DE92006772
• Country of Publication: United States
• Language: English

Related Subjects

440104* -- Radiation Instrumentation-- High Energy Physics Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CHARGED-PARTICLE TRANSPORT
CONFIGURATION
CURRENTS
CYLINDRICAL CONFIGURATION
DESIGN
DRIFT CHAMBERS
ELECTRIC CURRENTS
LEAKAGE CURRENT
MEASURING INSTRUMENTS
MULTIWIRE PROPORTIONAL CHAMBERS
PROPORTIONAL COUNTERS
RADIATION DETECTORS
RADIATION TRANSPORT
RESOLUTION
SEMICONDUCTOR DETECTORS
SI SEMICONDUCTOR DETECTORS
SPATIAL RESOLUTION
SURFACES
TESTING