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 17:13:36 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>> Initial grounding see final grounding from elog 187. ASIC settings for all - LEC slow comparator 0x64. Note on 11/02/22 1.8L widths with same settings were aida1-4: 300,240,250,260</p> <p>ADC data items <10k</p> <p>Good events fluctuate 10k-20k</p> <p>1.8L pulser widths aida1-4: 433,400,375,375(double peak)</p> <p>Attachments 1-4</p> <p>> New grounding implemented. 3mm grounding cable connect fee body to adaptor board. Each adaptor board is then connected directly to the cryring ground. Attachements 10-11</p> <p>ADC data items <10k</p> <p>Good events fluctuate 10k-20k</p> <p>1.8L pulser widths aida1-4: 340,288,288,295 (reduced double peak)</p> <p>Noise in the system also seems to have decreaed in zoomed out 1.8L plots (not attached). Aida1 still shows large noise peak channel 32000 on 1.8L. 1.8W no significant change, perhaps slightly reduced.</p> <p>Attachements 5-9</p> <p>Screencaps for following movement tests not taken as 1.8L and 1.8W spectra appeared the very similar as 5-9 except for slightly different widths.  </p> <p>> Detectors moved in and out (pneumatic). Leakage current dropped by ~0.2 uA, torque now reads +2.8 previously was ~0. </p> <p>no change to ADC data items or good events. During movement aida3 saw momentary increase in good events to ~40k before returning to normal range. Rest of fees good events stats unaffected by movement.</p> <p>1.8L pulser widths aida1-4: 413,313,295,306</p> <p>> servo motor (only) moved, torque reduced back to ~0</p> <p>no change in good events stats for any fees during servo movement. </p> <p>1.8L pulser widths aida1-4: 425,335,316,288</p> <p>> Detector moved to IN position (pnuematic and servo). 19.3mm to 81.8mm on potentiometer. </p> <p>No change to good events. During movements aida3 saw momentary increase in good events to ~41k, all other fees unaffected. </p> <p>1.8L pulser widths aida1-4: 302,221,305,293 </p> <p>Noise peak at channel ~32000 on aida 1 (1.8L) significantly reduced. little noise on other fees </p> <p>>Detector moved to fully OUT position (pneumatic and servo). </p> <p>no change in good events, during movement aida3 saw momentary increase to ~35k</p> <p>1.8L pulser widths aida1-4: 450,350,316,290</p> <p>Noise peak at chn 32000 on aida 1 has increased to previous size. little noise on other fees. </p> <p>> Bias increased to 120V. Leakage current stable however slightly higher ~0.1 uA</p> <p>no change in good events. </p> <p>1.8L pulser widths aida1-4: 447,345,189,301</p> <p>> Bias increased to 140V, increase in leakage current ~0.2 uA, appears stable. Increase to 150V, fluctuate in leakage current of +/-0.5uA then huge increase to >20uA trip. </p> <p>> Fee power cycle. Bias 100V, leakage current 9.9 uA ~0.1-0.2 uA higher than previous but stable. </p> <p>no change to good events</p> <p>1.8L pulser widths aida1-4: 468, 350,311, 296</p> <p>> Some decrease seen with new grounding, however main source of noise still apparent and any decrease seems insignificant compared to changes due to position movement. </p> <p>> Water pipes have been zipped tied so they no loger touch motors, no change in pulser widths or noise levels however.  </p></td> </tr> </tbody> </table> </p><p> </p> Encoding*: HTML ELCode plain Suppress Email notification

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