Dark Aging of the Jefferson Lab Machine Protection Beam Loss Monitors


J. Coleman, K. L. Mahoney


The Jefferson Lab accelerators use a photomultiplier (PMT) based beam loss monitoring (BLM) system for both machine protection as well as diagnostics. This paper describes the experience gained in dark aging the Jefferson Lab BLM PMTs prior to installation in the beam enclosure. The dark aged tubes exhibited significant decrease in background noise while retaining high gain. Data is given for a wide range of burn in conditions.


This abstract was presented at the 33rd Annual Midyear Meeting, "Instrumentation, Measurements, and Electronic Dosimetry", Abstracts Session, 1/30/2000 - 2/2/2000, held in Virginia Beach, VA.

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