tuning_the_s800_xdt
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tuning_the_s800_xdt [2015/10/26 14:02] pereira |
tuning_the_s800_xdt [2015/10/26 14:04] pereira |
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| * Confirm correlations between dispersive angle at intermediate image and p in FP (e.g., crdc1x). This correlation will be somewhat washed out by straggling in the target; in principle, this should be checked without the target, but the benefit vs. cost in time to remove the target is not worth it. | * Confirm correlations between dispersive angle at intermediate image and p in FP (e.g., crdc1x). This correlation will be somewhat washed out by straggling in the target; in principle, this should be checked without the target, but the benefit vs. cost in time to remove the target is not worth it. | ||
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| - | ==== Setup beamline ==== | ||
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| - | * Object and XF scintillators and intermediate image PPACs inserted if they will be used | ||
| - | * If Object scintillator will not be used, there is no reason to look at beam on it unless to debug a problem with the transmission | ||
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| - | * Set spectrograph Brho for unreacted fragment | ||
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| - | ==== Start scalers ==== | ||
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| - | * Use s800 account | ||
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| - | * Make sure experiment daq is: | ||
| - | * Stopped | ||
| - | * Gone | ||
| - | * Open terminal window (from bottom of mac) | ||
| - | * ssh to spdaq20 | ||
| - | * ps auw | grep Readout | ||
| - | * Does not get restarted | ||
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| - | * Under operations folder on mac | ||
| - | * scalers (gives error if no bridge) | ||
| ==== Setting Optimization ==== | ==== Setting Optimization ==== | ||
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| * 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 | ||
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| - | === Matched optics === | ||
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| - | * Typically much more time is invested for optimizing optics for matched optics than for focused optics | ||
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| - | * One input is optimizing for transmission | ||
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| - | * For tritons a scintillator is required at the pivot position since fragments at 5 Tm will not reach S800 FP | ||
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| - | * The last two analysis line triplets are used to tweak for the desired optical properties | ||
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| - | * Document optimized transmission with another run to disk to measure rate of fragment of interest at S800 FP | ||
tuning_the_s800_xdt.txt ยท Last modified: 2023/09/22 15:15 by swartzj
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