<p>08:45</p>
<p>Run 39 started.</p>
<p>D+ beam deuterium target. D+ beam energy is 1.0 MeV/u. (beam calc calculation is 1.0151 MeV/u)</p>
<p>Beam calc - Attachment 1</p>
<p>Target density is about 5e12 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 1 minute. Note we see some hydrogen in in the spectrum, this disapears after a few seconds.</p>
<p>Target T1=30.1K, T2=31.9K.</p>
<p>Nozzle position x=-2.96, z=1.72 mm</p>
<p>YR09-Etarget pressure = 2.55e-10 mbar.</p>
<p>Cooler set value = 575 V, 15 mA. Read value = 575.8 V, 12.9 mA</p>
<p>All leakage currents look good</p>
<p>Beam position. Vertical =0.0mm , Horizontal=-1.25 mm</p>
<p>Beam intensity ~1e8. We appear to lose intensity when reducing energy. It is still sufficient to for our purposes.</p>
<p>09.38</p>
<p>CRYRING vacuum and ambient temperature - attachments 2-3</p>
<p>09:58</p>
<p>All checks OK.</p>
<p>Target density is ~7e12 at/cm2</p>
<p>Data rate ~300kB/sec</p>
<p>All leakage currents look OK</p>
<p>After 1 hour we have 3671, 2515 and 1064 in each peak respectively. This is also logged on the google docs form in same tab as elog.</p>
<p> </p>
<p><strong>10:36</strong></p>
<p>Temps OK</p>
<p>Data rate OK 326 kB/sec</p>
<p>Leakage currents stable</p>
<p> </p>
<p><strong>12:30</strong></p>
<p>Temps ok - attach</p>
<p>Rates ok - attach</p>
<p>Merger ok - attach</p>
<p>14:20</p>
<p>Run stopped for energy change.</p> |