The HPC, electromagnetic calorimeter for the LEP Delphi experiment is a TPC-like detector working in B field. Its response depends much on charge transmission to the reading plane, which requires a good alignment between View the MathML source and B fields, and on drift velocity. To align View the MathML source and B fields and to monitor charge transmission, the signal of α particles, emitted by a source in a dr channel near the HT-plane, will be measured. Some HPC modules will be equipped with a P-I-N photodiode, faced to the source, in order to trigger α particles so to monitor drift velocity. Tests in a drift channel simulating HPC were performed and gave good results for this monitoring method also for what drift velocity is concerned.

Alignment in magnetic field, charge transmission and drift velocity monitoring for the tpc-like electromagnetic calorimeter of the delphi experiment at lep

SANNINO, MARIO;
1988-01-01

Abstract

The HPC, electromagnetic calorimeter for the LEP Delphi experiment is a TPC-like detector working in B field. Its response depends much on charge transmission to the reading plane, which requires a good alignment between View the MathML source and B fields, and on drift velocity. To align View the MathML source and B fields and to monitor charge transmission, the signal of α particles, emitted by a source in a dr channel near the HT-plane, will be measured. Some HPC modules will be equipped with a P-I-N photodiode, faced to the source, in order to trigger α particles so to monitor drift velocity. Tests in a drift channel simulating HPC were performed and gave good results for this monitoring method also for what drift velocity is concerned.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11567/379815
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