tuning_the_s800_xdt
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tuning_the_s800_xdt [2015/10/26 13:59] pereira |
tuning_the_s800_xdt [2015/10/26 14:01] pereira |
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| ==== Analysis line classic PPAC setup (Focus optics only) ==== | ==== Analysis line classic PPAC setup (Focus optics only) ==== | ||
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| * " | * " | ||
| * Classic PPACs have rate limitations from pileups | * Classic PPACs have rate limitations from pileups | ||
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| ==== Setup beamline ==== | ==== Setup beamline ==== | ||
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| * Object and XF scintillators and intermediate image PPACs inserted if they will be used | * 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 | * 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 | ||
| * Set spectrograph Brho for unreacted fragment | * Set spectrograph Brho for unreacted fragment | ||
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| ==== Start scalers ==== | ==== Start scalers ==== | ||
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| * Use s800 account | * Use s800 account | ||
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| === Focused optics === | === Focused optics === | ||
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| * Expectations for A1900 FP to S800 FP transmission | * Expectations for A1900 FP to S800 FP transmission | ||
| * 80% or better for mid-Z fragments | * 80% or better for mid-Z fragments | ||
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| === Matched optics === | === Matched optics === | ||
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| * Typically much more time is invested for optimizing optics for matched optics than for focused optics | * Typically much more time is invested for optimizing optics for matched optics than for focused optics | ||
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| ==== Setting up Reaction Settings ==== | ==== Setting up Reaction Settings ==== | ||
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| * Calculating reaction setting | * Calculating reaction setting | ||
| * Center unreacted beam at S800 FP | * Center unreacted beam at S800 FP | ||
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| ==== Coincidences ==== | ==== Coincidences ==== | ||
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| * Overview | * Overview | ||
| * Most experiments at the S800 involve setting up an auxiliary detector system (e.g. SeGA, HiRA, etc) to be used in coincidence with the standard detectors of the S800. | * Most experiments at the S800 involve setting up an auxiliary detector system (e.g. SeGA, HiRA, etc) to be used in coincidence with the standard detectors of the S800. | ||
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| ====== Dispersion Matching tuning ====== | ====== Dispersion Matching tuning ====== | ||
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| In the dispersion-matching optics, the S800 focal point is achromatic, i.e. the position of the beam in the dispersive direction does not depend on the momentum. As a consequence, | In the dispersion-matching optics, the S800 focal point is achromatic, i.e. the position of the beam in the dispersive direction does not depend on the momentum. As a consequence, | ||
tuning_the_s800_xdt.txt ยท Last modified: 2023/09/22 15:15 by swartzj
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