Difference between revisions of "The HPS Run Wiki"
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#'''First find the position of the collimator by performing the collimator wire scan. The current position of the wire for beam center is 4.41 (labeled on the GUI), if the measurement finds beam center at a different position use the expert GUI to set the 3.94 mm SVT collimator to the right position (current position is 6.212, which means that the distance between the wire and the center of the 3.94 mm hole is 1.802). After collimator is in place all beam studies should be done in these conditions with beam currents of 30 nA.''' --> | #'''First find the position of the collimator by performing the collimator wire scan. The current position of the wire for beam center is 4.41 (labeled on the GUI), if the measurement finds beam center at a different position use the expert GUI to set the 3.94 mm SVT collimator to the right position (current position is 6.212, which means that the distance between the wire and the center of the 3.94 mm hole is 1.802). After collimator is in place all beam studies should be done in these conditions with beam currents of 30 nA.''' --> | ||
<!--# '''Note: in order to have reliable readings on two important for HPS BPMs, 2H00 and 2H02, beam current should be >30 nA. Before moving forward with 2H02A harp scans and beam profile tune, make sure orbit lock is engaged at positions on 2H00(X=0.00,Y=0.00) and on 2H02(X=-1.1,Y=-1.). '''--> | <!--# '''Note: in order to have reliable readings on two important for HPS BPMs, 2H00 and 2H02, beam current should be >30 nA. Before moving forward with 2H02A harp scans and beam profile tune, make sure orbit lock is engaged at positions on 2H00(X=0.00,Y=0.00) and on 2H02(X=-1.1,Y=-1.). '''--> | ||
| − | # <strike>Establish beam to the Faraday cup following the "General Guidelines" and Beamline Procedures. The required beam profile at 2H02A harp is X-width <~0.05 mm, Y-width <~ 0.050 mm | + | # <strike>Establish beam to the Faraday cup following the "General Guidelines" and Beamline Procedures. The required beam profile at 2H02A harp is X-width <~0.05 mm, Y-width <~ 0.050 mm</strike> |
# Restore ECal and Hodoscope | # Restore ECal and Hodoscope | ||
| − | #* <strike> Turn on HVs on ECal and Hodoscope | + | #* <strike> Turn on HVs on ECal and Hodoscope</strike> |
| − | #* <strike> Record FADC rates without the target, make a snapshot of the sacaler GUIs for both detectors and send to the logbook with notes on the position of the highest rates in ECal that show beam position at ECal | + | #* <strike> Record FADC rates without the target, make a snapshot of the sacaler GUIs for both detectors and send to the logbook with notes on the position of the highest rates in ECal that show beam position at ECal</strike> |
# Turn on the chicane, use "Chicane" GUI to set correct currents on the magnet (see instructions) | # Turn on the chicane, use "Chicane" GUI to set correct currents on the magnet (see instructions) | ||
#* Check the ECal and hodoscope rates without the target at 50 nA, make a snapshot of the sacaler GUIs for both detectors and send to the logbook. Make note the highest rate position on ECal. | #* Check the ECal and hodoscope rates without the target at 50 nA, make a snapshot of the sacaler GUIs for both detectors and send to the logbook. Make note the highest rate position on ECal. | ||
Revision as of 05:03, 17 June 2019
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![[2]](https://logbooks.jlab.org/files/2016/04/3397123/DAQ_DPM_Crash_0.png){kind=link}