AIDA
GELINA
BRIKEN
nToF
CRIB
ISOLDE
CIRCE
nTOFCapture
DESPEC
DTAS
EDI_PSA
179Ta
CARME
StellarModelling
DCF
K40
CIRCE
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Sat Apr 5 23:31:31 2025
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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>Date: 07/04/2018</p> <p>We changed to cathod 23 - 7Be</p> <p>For beam tuning we:</p> <ul> <li>Closed downstream iris (actuator = 82.5mm)</li> <li>Closed central iris (actuator = 85.5mm)</li> <li>Set target ladder to position I (95.010mm) - 3mm collimator</li> </ul> <p>We found the cathode wheel could no longer be turned remotely, instead Lucio rotated the wheel by hand to cathode 23. We had low beam current at the cathode.</p> <p>Lucio called Raffaele to confirm the cathode number used yesterday (eLog entry #33)</p> <ul> <li>Cathode 23 is new -> still has copper on front of cathode which is removed during cesium sputtering -> process takes 2-3 hours</li> <li>Instead we moved to cathode 19 - 7Be. Thiis is the cathode used for 7Be yesterday</li> </ul> <p>We decided that when noting faraday cup currents we should also record the offset as well. Previously I was recording the measured minus offset value.</p> <p>After tuning, and setting the CSSM magnet to 918.3 mT:</p> <ul> <li>FC - 4 = 410 - 260 = 150 pA (drifted from 450 - 260 = 190 pA)</li> <li>FC - 0 = 92 - 0 = 92 pA (drifted from 107 - 0 = 107 pA)</li> <li>FC - E1 = 50 - 5 = 45 pA</li> </ul> <p>We felt ready to start a measurement with 7Be</p> <p> </p> <p> </p></td> </tr> </tbody> </table> </p><p> </p>
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