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 20:24:51 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 26/11/2018, after changing the far S2 mylar foil (see previous eLog entry #60):</p> <p>Checked pulser frequency on oscilloscope: 19.31Hz</p> <p>Began tuning 3MeV 7Li 2+.</p> <p>After tuning, FC4 = 1nA. Using 10mm aperture FCC = 313pA. Using 3mm aperture FCC = 250pA.</p> <p>Ladder set to position #7 - fresh C2 XIX target. Far S2 iris opened.</p> <p>Run # 181126162248</p> <ul> <li>Run time: 753s</li> <li>Pulser ON, as before</li> <li>Target: CH2 XIX</li> <li>Beam: 3.0MeV 7Li 2+</li> <li>DT ~ 18%</li> </ul> <p>Set ladder to position #5 - natC III</p> <p>Note: now saving to /Local_Parts/PartODF/</p> <p>Run # 181126163853</p> <ul> <li>Run time: 73s</li> <li>Pulser ON, as before</li> <li>Target: natC III</li> <li>Beam: 3.0MeV 7Li 2+</li> <li>DT ~ 20%</li> <li>Observe 7Li passing through target</li> </ul> <p>Moved ladder to position #2 - blank 10mm aperture</p> <p>Run # 181126164509</p> <ul> <li>Run time: 67s</li> <li>Pulser ON, as before</li> <li>Target: Blank 10mm</li> <li>Beam: 3.0MeV 7Li 2+</li> </ul> <p>Still see scattered beam at low S2 strips #'s - see attached picture 1 for spectrum of the innermost S2 strip.</p> <p>Performed further beam tuning to improve transmission.</p> <p>After tuning: Using 10mm aperture FCC = 415pA (280 - 420pA). Using 3mm aperture FCC = 290pA.</p> <p>Moved ladder to position #3 - CH2 XVI. Bombarded target with 3.0MeV 7Li 2+ and checked rate histogram on FAIR DAQ. ADC1 CH24 didn't show higher rates compared to other channels (eg ADC 1 CH10)</p> <p>Moved ladder to position #7 - CH2 XIX</p> <p>Run # 181126183711</p> <ul> <li>Run time: 616s</li> <li>Pulser ON, as before</li> <li>Target: CH2 XIX</li> <li>Beam: 3.0MeV 7Li 2+</li> <li>DT ~ 14%</li> <li>See attached picture 2 for sample S2 front strip spectrum. See attached picture 3 for diode spectrum.</li> </ul></td> </tr> </tbody> </table> </p><p> </p>
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