Output details
15 - General Engineering
Brunel University London
Output title
The effect of pulse rate on vacuum phototriodes response and the use of an LED pulser to improve stability
Type
E - Conference contribution
Name of conference/published proceedings
Astroparticle, Particle and Space Physics, Detectors and Medical Physics Applications, Proceedings of the 11th Conference
Volume number
5
Issue number
-
First page of article
80
ISSN of proceedings
-
Year of publication
2010
Number of additional authors
0
Additional information
The Endcap Electromagnetic Calorimeter of the CMS detector at the LHC, CERN uses vacuum phototriodes (VPTs), which operate in a 3.8T magnetic field, to detect fast scintillation light from lead tungstate crystals. The response of production VPTs was investigated in three independent studies: one by the author at Brunel. Good VPTs stability is demonstrated with a regime for operating a light pulser that minimises variations in response. A pulser rate of 100Hz is sufficient to stabilise the VPT response to <0.2%. This work was funded by an STFC grant and has led to further support (ST/K001639/1).
Interdisciplinary
-
Cross-referral requested
-
Research group
None
Proposed double-weighted
No
Double-weighted statement
-
Reserve for a double-weighted output
No
Non-English
No
English abstract
-
