<p>02:15</p>
<p>Density remains stable at 155 K</p>
<p>Temperature setpoint decreased by 1K. Aim to get to 110 K to see if higher stable density can be achieved. </p>
<p>Spike in YR pressures observed as temperature was decreased, still look OK. Will leave to settle for a while. T = 114K.</p>
<p>Rates remain stable at ~ 10^2 peak height level. </p>
<p>02:33</p>
<p>Pressures stabilised</p>
<p>Setpoint to 113 K. </p>
<p>02:40</p>
<p>No pressure spike observed after decrease</p>
<p>Setpoint to 112 K</p>
<p>02:46</p>
<p>No pressure spike observed after decrease</p>
<p>Setpoint to 111 K</p>
<p>Pressure spike observed in YR pressures (smaller than last) - give time to recover. </p>
<p>03:00</p>
<p>Setpoint to 110 K</p>
<p>No pressure spike observed. </p>
<p>Rutherford rate peak height remains stable at ~ 10^2 . Perhaps peak height minimum is consistently higher than before, difficult to say. </p>
<p>Attachment 1 - 115 K</p>
<p>Attachment 2 - spike 1</p>
<p>Attachment 3 - spike 2</p>
<p>All pressure stable now </p> |