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 Jun 15 06:10:21 2024
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<p><strong>7:00</strong></p> <p>Cooler voltage setpoint 247.4 V.</p> <p> </p> <p><strong>7:44</strong></p> <p>E1 Turbo at 808 Hz, 2.75 A</p> <pre> DSSSD bias & leakage current OK FEE64 temperatures OK ADC data item stats OK per FEE64 Rate spectra OK Beam intensity 7.5e+7 particles Target density ~3E10 atoms/cm2 </pre> <p> </p> <p><strong>8:30</strong></p> <p>E1 pressure was too high (2.13E-1 mbar) and turbo frequency too low (807 Hz).</p> <p>We increased T1 in steps of 0.2 K to 39.6 K, which improved in E1 (2E-1 mbar) and turbo freq. (813 Hz).</p> <p>T1 was decreased again to 39.4 K.</p> <p>After speaking to Nikos we slightly decreased the gas flow (~15 bar) as desribed in elog entry 631.</p> <p>Values now: turbo (817 Hz), E1 pressure (1.78E-1 mbar) -> both improved</p> <p> </p> <p><strong>10:06</strong></p> <p>The gas flow was decreased in three steps, there is now change visible on the gauge (still ~15 bar).</p> <p>The turbo frequency ist stable at 819 Hz and pressure at E1 is 1.45E-1 mbar.</p> <p>The temperature is currently at 39.0 K and we will start decreasing it to try and bring the target density up.</p> <p>DSSSD bias & leakage current</p> <p>OK FEE64 temperatures OK</p> <p>ADC data item stats OK</p> <p>per FEE64 Rate spectra OK</p> <p>Beam intensity 7.5e+7 particles</p> <p>Target density ~2E10 atoms/cm2</p> <p><strong>11:50</strong></p> <p>All system checks OK</p> <p>Target density is ~3e11 at/cm2.</p> <p>Temoerature of the nozzle is curretnly 37.5K with E1=1.6e-1 mbar. Turbo running at 820 Hz</p> <p> </p> <p><strong>14:29</strong></p> <p>Run stopped</p> <p> </p> <p> </p> <p> </p>
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ELOG V3.1.4-unknown