Difference between revisions of "The HPS Run Wiki"
Line 88: | Line 88: | ||
*9 575 7540 from Counting Room | *9 575 7540 from Counting Room | ||
== PDL: Stepan Stepanyan == | == PDL: Stepan Stepanyan == | ||
− | |||
− | == | + | == <font color=blue><b> Run Plan: April 23-30, 2015 </b></font>== |
− | <font color=blue><b> | ||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | </b></font> | ||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
During week days, Mon-Thursday, there will be no Day shifts due to work in the hall. | During week days, Mon-Thursday, there will be no Day shifts due to work in the hall. | ||
Line 183: | Line 114: | ||
* If orbit locks are on, call Rafayel for beam trip study. Take 4 hours of beam trip data with wire up; take 4 hours of beam trip data with wire down. | * If orbit locks are on, call Rafayel for beam trip study. Take 4 hours of beam trip data with wire up; take 4 hours of beam trip data with wire down. | ||
* Absent other requests, take data at 50 nA. Be sure to block Faraday cup if higher current. | * Absent other requests, take data at 50 nA. Be sure to block Faraday cup if higher current. | ||
+ | |||
+ | |||
+ | | valign=top | | ||
+ | |||
+ | ==<font color=blue><b>General Instructions:</b></font>== | ||
+ | ===Every Shift:=== | ||
+ | |||
+ | # Follow run plan as outlined by RC | ||
+ | # Ask MCC if orbit locks are on, they should be. | ||
+ | # Keep shift summary up-to-date in HBLOG. Record all that happens. | ||
+ | #* Check on white board all scalers, strip charts and monitoring plots that need to be logged regularly | ||
+ | #* Document any beam condition change and send scaler GUIs to HBLOG | ||
+ | #* Fill the shift check list for every shifts [https://logbooks.jlab.org/checklists/151] | ||
+ | # Update the run table on [https://docs.google.com/spreadsheets/d/1l1NurPpsmpgZKgr1qoQpLQBBLz1sszLz4xZF-So4xs8/edit#gid=43855609 Google Docs]. | ||
+ | # Perform 2H02A harp scan once per shift or when beam conditions have changed, based on beam monitors (BPMs, halo rates, beam-viewer) | ||
+ | # With any issue contact On-Call Experts or RC. | ||
+ | |||
+ | |||
+ | ===SVT Instructions=== | ||
+ | |||
+ | #Before sending beam to Faraday cup, verify (and page SVT expert if otherwise): | ||
+ | #* SVT should be open: "Position" at 0.000 mm in the main scaler_hps GUI | ||
+ | #* SVT HV is off: all red/green indicators RED in SVT bias GUI | ||
+ | #The first time sending beam to the Faraday cup after the hall is closed, page the SVT expert. | ||
+ | |||
+ | |||
+ | ===Acceptable Beam Conditions:=== | ||
+ | |||
+ | # <b> To establish good beam conditions first send beam to the tagger dump (ask MCC to turn ON the tagger).</b> | ||
+ | ## Check position, it should corresponds to previous good settings [https://logbooks.jlab.org/entry/3334787] | ||
+ | ## Check profile using 2C21 and tagger harp scans, it should correspond to previous settings ([https://logbooks.jlab.org/entry/3334749],[https://logbooks.jlab.org/entry/3334751]) | ||
+ | ## Beam can be accepted at this level if it is within 20% of previous standards | ||
+ | ## Halo counters TAG-L/T/T2 should be ~10Hz/nA [https://logbooks.jlab.org/entry/3326723], | ||
+ | # <b> While MCC degausses the tagger magnet, turn the chicane ON</b> | ||
+ | #* Strictly follow the procedure in the beam line manual! | ||
+ | # <b> Before sending beam to the Faraday cup</b> | ||
+ | #* Check 3mm collimator is IN | ||
+ | #* Check HPS target is OUT | ||
+ | #* Check SVT is out (position 0 mm) | ||
+ | # <b> Send beam to the Faraday cup</b> | ||
+ | #* Tune beam profile with 2H02A harp scan to be wide in X-direction and narrow in Y (see ref [https://logbooks.jlab.org/entry/3334783]) | ||
+ | #* Check the beam spot on chromax viewer | ||
+ | #* The halo counter rates before HPS must be low: | ||
+ | #*# UPS-L and UPS-R few Hz/nA, | ||
+ | #*# The tagger counters and downstream counters should count <<1 Hz/nA | ||
+ | #*# The halo counter rates on HPS, HPS-L/R/T/SC, depends on the collimator and HPS chicane settings, but should not be more than 100 Hz/nA [https://logbooks.jlab.org/entry/3328991] | ||
+ | #* Positions on BPMs must be close to what they were before [https://logbooks.jlab.org/entry/3334787] | ||
+ | #* Contact SVT expert to do SVT Wire Scan | ||
+ | #* Ask MCC to establish HPS orbit locks | ||
+ | #* Ask beam to be turned OFF to insert the 4um W target | ||
+ | #<b>Before accepting beam, make sure all the previous conditions are met. Always read previous log entries, compare settings of BPMs and correctors with previous settings using scaler_hps GUI. </b> | ||
|} | |} |
Revision as of 15:07, 25 April 2015
Important Phone NumbersShift ScheduleShift-Taker's ChecklistHot CheckoutBeam Time AccountingHPS Run Spreadsheet |
Procedures
|
Manuals |
JLab Logbooks
|
RC: Raphael Dupre
PDL: Stepan StepanyanRun Plan: April 23-30, 2015During week days, Mon-Thursday, there will be no Day shifts due to work in the hall. Short Term Schedule: Study Trigger and SVT running conditions. We will be running with 1.05GeV beam. This beam needs to be carefully restored, first to the tagger dump, then the alcove and Faraday cup screen. See detailed instructions in the left pannel.
Then, proceed with program Notes: If you change beam current current, turn orbit locks off first, there is a current - position dependence on the stripline BPMs 2H00 and 2H02. Do NOT change magnet currents when beam is on. DO NOT RUN MORE THAN 30 MINUTES ABOVE 50 nA WITHOUT THE BEAM BLOCKER
|
General Instructions:Every Shift:
SVT Instructions
Acceptable Beam Conditions:
|
|
|
|
|
|
|
|
Webcams: |
Trigger: |
Accelerator: Slow Controls:
|
Online & Offline: |