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:	Sat Nov 15 22:35:41 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>17:00</p> <p>Scraper tests conducted. We tried moving in the scrapers both at a fixed position throughout and also moving with the injection cycle.</p> <p>We were unable to find a good position with the scrapers that did not produce significant scattering in the detectors.</p> <p>Therefore we have moved the scrapers back to the fully out position.</p> <p>Run 42 started.</p> <p>We have increased the storage time to 10 reps (1 minute) in order to investigate the shoulders on the 3He peaks online and whether it is likely from injection. I think it is likely just a calibration issue</p> <p>D+ beam deuterium target. D+ beam energy is 0.75 MeV/u. (beam calc calculation is 0.7619 MeV/u). See previous entry for beamcalc.</p> <p>Beam calc - Attachment 1</p> <p>Target density is about 2e12 at/cm2</p> <p>All four detectors positioned fully out and stationary.</p> <p>Left potentiometer = 18.86 mm</p> <p>Right potentiometer = 19.8 mm</p> <p>Ring cycle time is 60 seconds. Note we see some hydrogen in in the spectrum, this disapears after a few seconds.</p> <p>Target T1=30.0K, T2=31.6K.</p> <p>Nozzle position x=-2.96, z=1.72 mm</p> <p>YR09-Etarget pressure = 2.0e-10 mbar.</p> <p>Cooler set value = 439 V, 15 mA. Read value = 439.81 V, 12.88 mA</p> <p>All leakage currents look good</p> <p>Beam position. Vertical =0.0mm , Horizontal=-1.5 mm</p> <p>Beam intensity ~6e8 on bunched beam, 6e8 on coasting.</p> <p>Data rate ~ 416kB/s</p> <p>slow comparator threshold to 0x24 (360 keV)</p></td> </tr> </tbody> </table> </p><p> </p> Encoding: HTML ELCode plain Suppress Email notification

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