AIDA
GELINA
BRIKEN
nToF
CRIB
ISOLDE
CIRCE
nTOFCapture
DESPEC
DTAS
EDI_PSA
179Ta
CARME
StellarModelling
DCF
K40
CIRCE
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Entry time:
Tue Mar 25 20:24:49 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>On 28/11/2018:</p> <p>After pulser walkthrough (see eLog entry #67)</p> <p>Dismounted targets from ladder - see picture 1 and 2 for upstream and downstream sides respectively</p> <p>Mounted alpha source on ladder - see pictures 3 and 4 for upstream and downstream sides respectively</p> <p>New target ladder configuration is now:</p> <table border="1" cellpadding="1" cellspacing="1" style="width:500px"> <tbody> <tr> <td>Target Position</td> <td>Target</td> </tr> <tr> <td>1</td> <td>Blank 3mm</td> </tr> <tr> <td>2</td> <td>Blank 10mm</td> </tr> <tr> <td>3</td> <td>Nothing</td> </tr> <tr> <td>4</td> <td>Alpha-Source</td> </tr> <tr> <td>5</td> <td>Nothing</td> </tr> <tr> <td>6</td> <td>Nothing</td> </tr> <tr> <td>7</td> <td>Nothing</td> </tr> </tbody> </table> <p>Dismounted thin CH2 target 50 - it was still attached to the collimator.</p> <p>Remounted far S2 with 0.9um mylar, remounted far iris arm.</p> <p>In air, pressures (mBar):</p> <ul> <li>TPU1 > 1000</li> <li>TPU2 > 1000</li> <li>TPD1 = 170 (above range)</li> <li>TPD2 = 73 (above range)</li> <li>CHUP = Sensor Off</li> <li>CHDW = No Sensor</li> </ul> <p>Far S2 biased to -130.0V, leak I = 1.55uA. Diode biased to -70.1V, leak I = 0.01uA.</p> <p>Ratemeter ~9200Hz.</p> <p>Switched off detectors.</p> <p>12:05 Ecodry 1 and 2 on. Started opening manual valve.</p> <p>12:20 Manual valve opened fully, T1600 backing valve opened. Started turbos.</p> <p>12:30 Pressures (mBar):</p> <ul> <li>TPU1 = 3.0e-5</li> <li>TPU2 = 5.1e-6</li> <li>TPD1 = 5.1e-6</li> <li>TPD2 = 7.5e-6</li> <li>CHUP = Sensor Off</li> <li>CHDW = No Sensor</li> </ul> <p>Far S2 biased to -130.0V, leak I = 1.52uA. Diode biased to -70.1V, leak I = 0.01uA.</p> <p>Rate meter ~ 7000Hz. Ladder set to position #4 - alpha source. Rate meter still ~ 7000Hz.</p> <p>Run # 181128123940</p> <ul> <li>Run time: 3428s</li> <li>Pulser ON, as before</li> <li>Alpha-source</li> <li>S2 mylar: 0.9um</li> <li>DT ~ 22%</li> <li>See attached picture 5 for sample Far S2 front strip spectrum</li> </ul></td> </tr> </tbody> </table> </p><p> </p>
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