Calibration system of the Phobos silicon detectors

Author

Griesmayer, Erich ; Frais-Kölbl, Helmut ; Pernegger, Heinz ; Wadsworth, Bernard ; Fitch, John

Author_Institution

Fachhochschule Wiener Neustadt, Austria

Volume

48

Issue

4

fYear

2001

fDate

8/1/2001 12:00:00 AM

Firstpage

1565

Lastpage

1569

Abstract

The Phobos experiment at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory uses silicon pad detectors to measure charged particles in Au-Au collisions. Precise knowledge of the ionization signal amplitude in the silicon pad detector is vital for the determination of particle multiplicity and for particle identification. We describe here a system that precisely calibrates the gain curve for each channel in the 135 000-channel silicon readout system. The calibration covers the range up to 100 minimum ionizing particles, and the calibration circuit has a linearity better than ±1% over a dynamic range of 1:250

Keywords

calibration; nuclear electronics; readout electronics; silicon radiation detectors; Phobos silicon detectors; RHIC; Relativistic Heavy Ion Collider; Si; calibration circuit; calibration system; ionization signal amplitude; minimum ionizing particles; particle identification; particle multiplicity; Calibration; Circuits; Current measurement; Detectors; Ionization; Laboratories; Linearity; Particle measurements; Signal processing; Silicon;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.958397

Filename

958397