Difference between revisions of "Electron Detector"

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# [[Diamond strip electron detector]]
+
== Standard Running Procedure ==
# [[Test Box]]
+
=== with the previous beam activity ongoing (parasitically) ===
# [[Shielded Flex Cables]]
+
* Turn ON High Voltages to the e-detector
# [[Q-Weak Amplifier Discriminator]]
+
** take a quick run to check DAQ functionality
# [[Low Voltage Power supply for QWAD]]
+
** check analyzer functionality
# [[e-Detector Motion System]]
+
* on any cdaq machine, type '''StripTool''' and pull up strip chart of the epics variables of the 4 Hall-C Chicane BPMs
# [[e-Detector Assembly]]
+
** 3P01A (IPM3P01A.XPOS , IPM3PO1A.YPOS)
 +
** 3P02A (IPM3P02A.XPOS , IPM3PO2A.YPOS)
 +
** 3P02B (IPM3P02B.XPOS , IPM3PO2B.YPOS)
 +
** 3P03A (IPM3P03A.XPOS , IPM3PO3A.YPOS)
 +
 
 +
===Request beam to be set through the chicane and verify the same===
 +
* Check Chicane view: on any cdaq machine type '''edmmonticello''', from the '''Monticello''' screen
 +
** open '''Magnets''' -> '''Magnet Commander'''
 +
*** '''3C''' -> '''Compton Combo'''
 +
*** In this '''Hall C Compton Control''' screen, the ''REQUESTED'' and ''ACTUAL'' current readbacks should be ~104 A
 +
** open '''BPM''' -> '''BPM Overview'''
 +
*** open '''Absolute''' ->  on the Hall C column from the left bottom of this screen
 +
*** BPM '''3P01A''', '''3P02A''', '''3P02B''' and '''3P03A''' should have finite non-zero read back
 +
 
 +
===Request beam to be taken off, for lowering the e-detector===
 +
* Lower the e-detector to a position in accordance with current run plan
 +
** Motion mechanism [[https://hallcweb.jlab.org/polwiki/index.php/E-Detector_Motion_System#Motion_Mechanism_GUI]]
 +
*** begin with the program '''Go Home'''
 +
*** '''jog''' to the intended position
 +
 
 +
::::::::::::::::::::::::::::::::::::: courtesy: ''Thanks to Dave Gaskell for the motivation to organize this information''
 +
 
 +
=== Request beam according to the intended run plan===
 +
==  [[Diamond strip electron detector]] ==
 +
 
 +
 
 +
==  [[Test Box]] ==
 +
 
 +
 
 +
==  [[Shielded Flex Cables]] ==
 +
 
 +
 
 +
==  [[Q-Weak Amplifier Discriminator]] ==
 +
 
 +
 
 +
==  [[Low Voltage Power supply for QWAD]] ==
 +
 
 +
 
 +
==  [[e-Detector Motion System]] ==
 +
 
 +
 
 +
==  [[e-Detector Assembly]] ==

Revision as of 03:03, 19 November 2010

Standard Running Procedure

with the previous beam activity ongoing (parasitically)

  • Turn ON High Voltages to the e-detector
    • take a quick run to check DAQ functionality
    • check analyzer functionality
  • on any cdaq machine, type StripTool and pull up strip chart of the epics variables of the 4 Hall-C Chicane BPMs
    • 3P01A (IPM3P01A.XPOS , IPM3PO1A.YPOS)
    • 3P02A (IPM3P02A.XPOS , IPM3PO2A.YPOS)
    • 3P02B (IPM3P02B.XPOS , IPM3PO2B.YPOS)
    • 3P03A (IPM3P03A.XPOS , IPM3PO3A.YPOS)

Request beam to be set through the chicane and verify the same

  • Check Chicane view: on any cdaq machine type edmmonticello, from the Monticello screen
    • open Magnets -> Magnet Commander
      • 3C -> Compton Combo
      • In this Hall C Compton Control screen, the REQUESTED and ACTUAL current readbacks should be ~104 A
    • open BPM -> BPM Overview
      • open Absolute -> on the Hall C column from the left bottom of this screen
      • BPM 3P01A, 3P02A, 3P02B and 3P03A should have finite non-zero read back

Request beam to be taken off, for lowering the e-detector

  • Lower the e-detector to a position in accordance with current run plan
    • Motion mechanism [[1]]
      • begin with the program Go Home
      • jog to the intended position
courtesy: Thanks to Dave Gaskell for the motivation to organize this information

Request beam according to the intended run plan

Diamond strip electron detector

Test Box

Shielded Flex Cables

Q-Weak Amplifier Discriminator

Low Voltage Power supply for QWAD

e-Detector Motion System

e-Detector Assembly