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 17:13:02 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>15:30</p> <p>1.5 MeV/u beam currently being tuned</p> <p>Target is ON, setpoint = 135 K</p> <p>System checks OK - white rabbit fail diff ~ 9</p> <p>Temperatures OK</p> <p>Merger OK</p> <p>Data rate ~ 1400 kb/sec</p> <p>Leakage current ~ 3.41 uA</p> <p>Aida 1 and 2 missing channels from previous days appear working on stat layout 2 and xy pixel total plot (attachment 3)</p> <p>17:12</p> <p>Beam tuning complete. See attached Ex rate histogram.</p> <p>The cryo compressor is being turned OFF for around 1 hour to remove any frozen nitrogen which may be the cause of the increased pressures observed.</p> <p>Beam OFF to do so.</p> <p>System checks OK - white rabbit fail diff ~ 9</p> <p>Temperatures OK</p> <p>Merger OK</p> <p>Data rate ~ 200 kb/sec</p> <p>Compressor OFF, setpoint on controller is 273 K</p> <p>18:51</p> <p>Pressure in the ring recovered quickly after closing valves to gas jet (attachment 5)</p> <p>Increasing temperature caused a large spike in pressure in the inlets. E1 turbo briefly shut down due to the pressure increase, since restarted and pressure back in the -4 mbar range. (attachment 6)</p> <p>Temperature being decreased</p> <p>Beam back ON</p> <p>data rate ~ 1500 kb/sec</p> <p>merger OK</p> <p>Temperatures OK</p> <p>System checks OK - white rabbit diff ~ 12</p> <p>21:58</p> <p>After cooling the jet target, expected density is not achieved. E4 pressure is ~4E-10 mbar compared to ~2E-8mbar previously. Temperature reduced to 127K E4 pressure increases however stilll within -10 mbar range.</p> <p>With beam on target we see rutherford peak at ~3 MeV, however it is much reduced.</p> <p>Beam OFF to investigate inside the cave.</p> <p>Decreasing temperature of nozzle in 0.5 k steps to see effect on E4 and S1 dump.</p> <p> </p></td> </tr> </tbody> </table> </p><p> </p>
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