<i>HV-Test.<br />Dark Current Table for M3R4 chambers tested at CERN</i></font>

HV-Test.
Dark Current Table for M3R4 chambers tested at CERN

<i>Limit: Dark Current (sum of 4 gaps) <=100nA at HV=2.9 kV<br />Gas mixture Ar(40)/CO2(55)/CF4(5)<br />The table presents the currents (in nA) measured in the HV line.</i>

Limit: Dark Current (sum of 4 gaps) <=100nA at HV=2.9 kV
Gas mixture Ar(40)/CO2(55)/CF4(5)
The table presents the currents (in nA) measured in the HV line.


Plot of dark currents for M3R4 chambers tested at CERN.
Chamber 2.4 kV 2.5 kV 2.6 kV 2.7 kV 2.8 kV 2.9 kV Test Date Comments
76 4 06-OCT-05 Test was done for Gaps 2+4 only. Short on Gap 3, pad 20 and sparks at 2.45 kV inside Gap1


For comments, contact: Oleg.Maev@cern.chu