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Re: Need of a preamplifier [message #725 is a reply to message #724] Mon, 09 August 2004 11:12 Go to previous messageGo to previous message
Chilo Garabatos is currently offline  Chilo Garabatos
Messages: 12
Registered: August 2004
Location: GSI
occasional visitor
From: lxial22.gsi.de
Hi, Clemens,
discharges due to dust can happen; one could tell if there was a preamp to the scope. For the records, the process of burning potential dust is called conditionning. The time scale is difficult to judge.
But current that dissapears can also be due to humidity which dries out, or to the capacitance of the system (but 2 hours is perhaps too much for that). Turning HV off and on after a few hours (with gas off or on) would give more information.
Regards and keep having fun.
Chilo
 
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