<div dir="ltr"><br><div>Dear Collaborators,</div><div><br></div><div>Here is the summary of activity during the last week:</div><div><br></div><div><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">We were scheduled to receive 122h of CW beam, we actually received 57h and of that we used 52h.  The 5h of acceptable beam not used was mostly spent on configuration changes - switching radiators or diamond orientation.  DAQ problems only accounted for 1h of BANU, as by chance most of the DAQ crashes occurred just before the beam disappeared for a while.</span></div><div><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><br></span></div><div><span style="font-size:12.8px">It was difficult for the accelerator to deliver the large currents needed by Hall C (for boiling studies) whilst the other halls were running, and so some time was dedicated to getting those completed.  </span></div><div><span style="font-size:12.8px"><br></span></div><div><span style="font-size:12.8px">We asked for beamline retuning three times, this resulted in improved beam position stability and convergence.</span></div><div><span style="font-size:12.8px"><br></span></div><div><span style="font-size:12.8px"><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">During production running 4.8E9 triggers were collected.</span><br></span></div><div><span style="font-size:12.8px"><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><br></span></span></div><div><span style="font-size:12.8px">Special tasks completed during the week include:</span></div><div><span style="font-size:12.8px"><br></span></div><div><span style="font-size:12.8px">Identifying a new location on the diamond to improve the sharpness of the coherent edge;</span></div><div><span style="font-size:12.8px">Threshold scans for the CDC and TOF;</span></div><div><span style="font-size:12.8px">Background studies for the CDC and FDC;</span></div><div><span style="font-size:12.8px">Pair spectrometer converter thickness study; </span></div><div><span style="font-size:12.8px">Preparatory work for the upcoming TAC run. </span></div><div><br></div><div>More details on the day to day running can be found at <a href="https://halldweb.jlab.org/wiki/index.php/Run_Planning_Meeting_Notes,_Mar_29-Apr_4,_2018">https://halldweb.jlab.org/wiki/index.php/Run_Planning_Meeting_Notes,_Mar_29-Apr_4,_2018</a>.<br></div><div><br></div><div><br></div><div>Best regards,</div><div><br></div><div>Naomi Jarvis.</div><div><br></div><div><span style="font-size:12.8px"><br></span></div><div><span style="font-size:12.8px"><br></span></div><div><br style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial"><br></div></div>