Calibration system of the phobos silicon detectors

Citation
E. Griesmayer et al., Calibration system of the phobos silicon detectors, IEEE NUCL S, 48(4), 2001, pp. 1565-1569
Citations number
7
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Nuclear Emgineering
Journal title
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
ISSN journal
0018-9499 → ACNP
Volume
48
Issue
4
Year of publication
2001
Part
3
Pages
1565 - 1569
Database
ISI
SICI code
0018-9499(200108)48:4<1565:CSOTPS>2.0.ZU;2-0
Abstract
The Phobos experiment at the Relativistic Heavy Ion Collider (RHIC) at Broo khaven National Laboratory uses silicon pad detectors to measure charged pa rticles in Au-Au collisions. Precise knowledge of the ionization signal amp litude in the silicon pad detector is vital for the determination of partic le multiplicity and for particle identification. We describe here a system that precisely calibrates the gain curve for each channel in the 135 000-ch annel silicon readout system. The calibration covers the range up to 100 mi nimum ionizing particles, and the calibration circuit has a linearity bette r than +/-1% over a dynamic range of 1:250.