tuning_the_s800_xdt
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tuning_the_s800_xdt [2015/10/26 14:09] pereira [Setting up Reaction Settings] |
tuning_the_s800_xdt [2015/10/26 14:18] pereira [Setting Optimization] |
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| ==== Analysis line classic PPAC setup (Focus optics only) ==== | ==== Analysis line classic PPAC setup (Focus optics only) ==== | ||
| + | **THIS SECTION IS STILL IN PROGRESS** | ||
| * " | * " | ||
| Line 237: | Line 238: | ||
| ==== Setting Optimization ==== | ==== Setting Optimization ==== | ||
| - | |||
| - | === Focused optics === | ||
| * Expectations for A1900 FP to S800 FP transmission | * Expectations for A1900 FP to S800 FP transmission | ||
| Line 248: | Line 247: | ||
| * Want to balance losses between S800 analysis line and Transfer Hall (the S800 analysis line is typically slightly worse) | * Want to balance losses between S800 analysis line and Transfer Hall (the S800 analysis line is typically slightly worse) | ||
| * Best diagnostic is scalers from S800 FP, object scintillator and XF scintillator | * Best diagnostic is scalers from S800 FP, object scintillator and XF scintillator | ||
| - | * Tweak y-quads (while watching scalers) in front of dipole gaps (this works both for Transfer Hall and analysis line); choose elements that have biggest effect with smallest ratio change | + | * Using the knob box and the NCS application **QtKM** (file **BLSetup_A1900.gkm**), |
| * Document optimized transmission with another run to disk to measure rate of fragment of interest at S800 FP | * Document optimized transmission with another run to disk to measure rate of fragment of interest at S800 FP | ||
| Line 256: | Line 255: | ||
| - | |||
| - | |||
| - | ===== Follow-up ===== | ||
| - | |||
| - | * Before leaving beam with experimenters | ||
| - | * Set up current trip points on Linux HV controls | ||
| - | * Values used for K-48 | ||
| - | * 5 for CRDC and Ion Chamber anodes and intermediate image ppacs | ||
| - | * 50 for CRDC drifts | ||
| - | * 80 for IC drift | ||
| - | * Ensure alarms are running | ||
| - | * Make sure Linux HV GUI alarms are enabled | ||
| - | * Make sure threshold on isobutane level is set up (not currently connected to alarms because they give too many false alarms when communication is lost) | ||
| - | * All logs are being recorded | ||
| - | * There is no log file for biases controlled by Labview | ||
| - | * Linux HV | ||
| - | * LabView gas handling system | ||
| - | * Note in logbook | ||
| - | * Scintillator biases | ||
| - | * IC gate biases | ||
| - | * Post reference printouts for experimenters | ||
| - | * HV status: a snapshot of HV GUI | ||
| - | * Gas handling system status: a snapshot of LabView window | ||
| - | |||
| - | * Create window configuration with summing regions to make it easier for experimenters to track efficiency/ | ||
| - | |||
| - | * Setting up coincidences for additional reaction settings in an experiment | ||
| - | * Do not need to redo coincidence settup if secondary beam does not change | ||
| - | * Might need to redo coincidence setup if secondary beam changes drastically | ||
| - | |||
| - | * To watch during experiment | ||
| - | * Look for isobutene running out – messes up data over several hours | ||
| - | |||
| - | * Implementing dE- or TOF-based corrections is part of EXR | ||
| - | |||
| - | More detail needed | ||
| - | Minimum rates required for coincidence setup | ||
| - | Selection of appropriate substitute reactions for coincidence setup | ||
| - | How to feel comfortable that there will not be a problem with FP detector gases running out | ||
| - | Starting alarms | ||
| - | Starting logging | ||
| Line 406: | Line 364: | ||
| {{: | {{: | ||
| + | |||
| + | |||
| + | |||
| + | |||
| + | |||
| + | ====== Follow-up ====== | ||
| + | |||
| + | * Before leaving beam with experimenters | ||
| + | * Set up current trip points on Linux HV controls | ||
| + | * Values used for K-48 | ||
| + | * 5 for CRDC and Ion Chamber anodes and intermediate image ppacs | ||
| + | * 50 for CRDC drifts | ||
| + | * 80 for IC drift | ||
| + | * Ensure alarms are running | ||
| + | * Make sure Linux HV GUI alarms are enabled | ||
| + | * Make sure threshold on isobutane level is set up (not currently connected to alarms because they give too many false alarms when communication is lost) | ||
| + | * All logs are being recorded | ||
| + | * There is no log file for biases controlled by Labview | ||
| + | * Linux HV | ||
| + | * LabView gas handling system | ||
| + | * Note in logbook | ||
| + | * Scintillator biases | ||
| + | * IC gate biases | ||
| + | * Post reference printouts for experimenters | ||
| + | * HV status: a snapshot of HV GUI | ||
| + | * Gas handling system status: a snapshot of LabView window | ||
| + | |||
| + | * Create window configuration with summing regions to make it easier for experimenters to track efficiency/ | ||
| + | |||
| + | * Setting up coincidences for additional reaction settings in an experiment | ||
| + | * Do not need to redo coincidence settup if secondary beam does not change | ||
| + | * Might need to redo coincidence setup if secondary beam changes drastically | ||
| + | |||
| + | * To watch during experiment | ||
| + | * Look for isobutene running out – messes up data over several hours | ||
| + | |||
| + | * Implementing dE- or TOF-based corrections is part of EXR | ||
| + | |||
| + | More detail needed | ||
| + | Minimum rates required for coincidence setup | ||
| + | Selection of appropriate substitute reactions for coincidence setup | ||
| + | How to feel comfortable that there will not be a problem with FP detector gases running out | ||
| + | Starting alarms | ||
| + | Starting logging | ||
tuning_the_s800_xdt.txt · Last modified: 2023/09/22 15:15 by swartzj
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