AIDA
GELINA
BRIKEN
nToF
CRIB
ISOLDE
CIRCE
nTOFCapture
DESPEC
DTAS
EDI_PSA
179Ta
CARME
StellarModelling
DCF
K40
ISOLDE
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<p> <table width="98%" align="center" cellspacing="1" style="border:1px solid #486090;"> <tbody> <tr> <td cellpadding="3px" style="background-color:#486090; font-weidht:bold; color:white;">Quote:</td></tr> <tr> <td cellpadding="10px" style="background-color:#FFFFB0;"><p>While changing HI degrader foil to 10um Al, the E detector was investigated, due to previously observed alpha punch-through.<br /> On visual inspection, the E detector appeared to be 1mm in thickness, leading us to believe that instead we were not fully depleting the detector.</p> <p>The bias supply was investigated, and was found to be supplying a lower voltage (on all channels) than was shown on the display (14V -> 2V in reality, 350V -> 60V in reality).<br /> The bias module was replaced, and the faulty module marked as such.</p> <p>As a result of this change, the configuration of the detector bias channels has been altered (as ch 2 on new module can't supply >100V).<br /> <br /> -------------</p> <p>New Configuration:</p> <p>Detector : Voltage : Leakage Current<br /> Ch 1 - dE : 40 V : 0.92 uA<br /> Ch 2 - HI : 14 V : 2.52 uA<br /> Ch 3 - E : 350 V : 3.91 uA</p></td> </tr> </tbody> </table> </p><p> </p>
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