Difference between revisions of "PS acceptance and luminosity determination"
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[[Tac run, May 2018]] | [[Tac run, May 2018]] | ||
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| + | [https://logbooks.jlab.org/entry/3622665 AC run, half of the field, Nov 7, 2018] | ||
== Instructions to obtaining measured fluxes from CCDB == | == Instructions to obtaining measured fluxes from CCDB == | ||
A Python script '''plot_flux_ccdb.py''' located in [https://github.com/JeffersonLab/hd_utilities/tree/master/psflux hd_utilities] will create a ROOT histogram of the PS tagged flux for a given range of runs. More detailed instructions are provided in the [https://github.com/JeffersonLab/hd_utilities/blob/master/psflux/README.md $README] on GitHub. | A Python script '''plot_flux_ccdb.py''' located in [https://github.com/JeffersonLab/hd_utilities/tree/master/psflux hd_utilities] will create a ROOT histogram of the PS tagged flux for a given range of runs. More detailed instructions are provided in the [https://github.com/JeffersonLab/hd_utilities/blob/master/psflux/README.md $README] on GitHub. | ||
Revision as of 12:59, 12 November 2018
Pair Spectrometer acceptances were measured using runs with the total absorption counter. The shapes were compared with the detailed Geant simulation.
The normalization of PS acceptances agrees reasonably well, on the level of 5%, for 2018, 2017, and 2016 TAC runs. Note, the acceptance shape for 2016 data
is different due to the larger PS magnetic field. A good agreement in shapes between the measurements and simulation was observed.
Presentations on TAC measurements
Comparison of the refined acceptance of 2016, new acceptance of 2017
Preliminary determination of the PS acceptances in 2016
AC run, half of the field, Nov 7, 2018
Instructions to obtaining measured fluxes from CCDB
A Python script plot_flux_ccdb.py located in hd_utilities will create a ROOT histogram of the PS tagged flux for a given range of runs. More detailed instructions are provided in the $README on GitHub.
