A study of the performance of the gas transmission monitor of the PHENIX Hadron Blind Detector

Author

Azmoun, B. ; Pisam, R.P. ; Stoll, S. ; Woody, C.

Author_Institution

Brookhaven Nat. Lab., Upton, NY, USA

fYear

2010

fDate

Oct. 30 2010-Nov. 6 2010

Firstpage

1931

Lastpage

1934

Abstract

For the successful operation of the Hadron Blind Detector (HBD) of the PHENIX Experiment at RHIC, it is essential that the radiator gas quality be continuously monitored. This is accomplished through the use of a gas transmission monitor, which is based on a customized McPherson 234/302 VUV spectrometer. After studying the performance characteristics of the spectrometer at the completion of RHIC Run9, a number of improvements were implemented to greatly improve its performance during Run10, including the replacement of all of the system optics. Following this upgrade, the transmission monitor was successfully used to monitor the gas quality of the HBD for the most recent Au+Au run at RHIC. With the aid of the transmission monitor, the absolute integrated transmittance of the detector was used to determine an absolute measure of the HBD detector efficiency throughout the run.

Keywords

Cherenkov counters; particle spectrometers; Au(Au,X); Cherenkov detector; McPherson 234/302 VUV spectrometer; PHENIX hadron blind detector; RHIC Run9; absolute integrated transmittance; gas transmission monitor; radiator gas; Detectors; Impurities; Loss measurement; Monitoring; Optics; Pollution measurement; Wavelength measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record (NSS/MIC), 2010 IEEE

Conference_Location

Knoxville, TN

ISSN

1095-7863

Print_ISBN

978-1-4244-9106-3

Type

conf

DOI

10.1109/NSSMIC.2010.5874111

Filename

5874111