<p>New run 52 with:</p>
<p><strong>Electron cooler setpoint 244.2 V</strong></p>
<p>Electron cooler read 243.66 V</p>
<p>Collector current 4.3 uA</p>
<p>Right arm at 64.60 mm</p>
<p>Left arm IN at 36.54 mm</p>
<p>Target 2E11 fluctuating</p>
<p>Injection ca. 5E7</p>
<p> </p>
<p><strong>22;00</strong></p>
<p>Detectors moved out while HKR plays with the beam injection to improve its stability</p>
<p><strong>22;56</strong></p>
<p>All system checks good. Detectors still out. Stats in attachment 1</p>
<p><strong>23:08</strong></p>
<p>HKR still has to call, but I have put detectors back in since they are only operating on injection.</p>
<p>Noticed that from time to time the target density still sparks to E12, and this corresponds to when the temperature drops.</p>
<p><strong>23:42</strong></p>
<p>HKR called back, they found the problem and fixed it. Beam seems more stable, with injections at ca. 5E7</p>
<p><strong>23:50</strong></p>
<p>DSSD0 high stats, cycled the motors to clear them.</p>
<p><strong>00:18</strong></p>
<p>All system checks are fine. Attachment 2-3 with stats and a spectrum</p>
<p><strong>00:38</strong></p>
<p>Spikes in the target got more frequent. Increased temperature to 30.5K and monitor if it helps stabilizing it.</p>
<p><strong>01:52</strong></p>
<p>All checks OK. Target behaving, density 5-8E11.</p>
<p>Attachments 4-5</p>
<p><strong>03:10</strong></p>
<p>System checks OK.</p>
<p>Target consistent</p>
<p>Some beam outages which were quickly fixed by HKR</p>
<p><strong>05:03</strong></p>
<p>System checks OK.</p>
<p>Target consistent</p>
<p><strong>07:00</strong></p>
<p>Lost beam. Detectors moved out</p>
<p>Will likely end run once beam is back and change energy. Do not use data past 7 am</p>
<p>All system checks OK</p> |