ELOG CARME

AIDA GELINA BRIKEN nToF CRIB ISOLDE CIRCE nTOFCapture DESPEC DTAS EDI_PSA 179Ta CARME StellarModelling DCF K40

CARME

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Entry time:	Fri Apr 4 17:16:33 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>22:30 Shift handed over. DAQ OK. Target OK. Beam OK.</p> <p> </p> <p>00:22 Temperatures OK</p> <p>Stats OK</p> <p>Good events OK</p> <p>Scalers OK</p> <p>System wide checks as usual - WR fails by 68 ns</p> <p>Leakage current OK</p> <p>Target OK</p> <p>Motors OK</p> <p>Pressure in ring 5E-10 mbar OK</p> <p>Beam OK</p> <p> </p> <p>02:26 - All OK as above</p> <p>WR now fails by 80</p> <p>Data rate ~800 KB/s</p> <p> </p> <p>03:40 All OK as above</p> <p>Data rate back to ~ 1900 KB/s</p> <p> </p> <p>04:20 All OK as above</p> <p>Started compressing files in WS3, monitor 1</p> <p>Noticed bias is not as stable as it has been so far, but no reason for concern. See attach.</p> <p> </p> <p>04:30 Saw a spike in counts similar to beam halo. See attachment. Did not see it before. No effects on leakage current. To be checked offline.</p> <p> </p> <p>06:00 Could not see any more spikes</p> <p>All other checks OK as before.</p> <p>Data rate back to ~1000 Kb/s</p> <p> </p> <p>06:32 Requested beam off for end of beamtime.</p> <p>Left DAQ on - run R88</p> <p>Turning off jet target as per Nikos instructions</p> <p>Final cleanup + pulse walkthrough to be done by JM and OH later today.</p> <p> </p> <p>Target nozzle removed - pressure in S1 now 1.93E-8 mbar</p> <p>Valves closed</p> <p>Entering cave to switch compressor off and change N backing pressure to 10 bar.</p></td> </tr> </tbody> </table> </p><p> </p> Encoding: HTML ELCode plain Suppress Email notification

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