[Halld-cal] Summary of Spring 17 BCAL calibrations

[Mark Macrae Dalton]

The BCAL calibrations were completely redone using higher statistics (10 files from each run) that were available from monitoring launches ver14, 15 and 16.

A few remaining 4 ns offsets from 3 channels in a few runs were corrected.  These corrections represent the only run-dependent entries made.  All other calibrations were studied as a function of run number and found to be constant enough to use a single value for Spring 17.

Attenuation length and gain ratio
	https://logbooks.jlab.org/entry/3473762 <https://logbooks.jlab.org/entry/3473762>

Z-track parms, End time difference and Effective velocity 
	These are all extracted from the same comparison of tracking Z and BCAL tend time difference
	https://logbooks.jlab.org/entry/3473509 <https://logbooks.jlab.org/entry/3473509>

	In particular there are wiggles in the residual of the position difference between BCAL and tracking.
	https://logbooks.jlab.org/entry/3473511 <https://logbooks.jlab.org/entry/3473511>

Global time offset
	https://logbooks.jlab.org/entry/3474308 <https://logbooks.jlab.org/entry/3474308>

Timewalk corrections
	https://logbooks.jlab.org/entry/3473835 <https://logbooks.jlab.org/entry/3473835>
Best,
Mark Macrae Dalton



-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/halld-cal/attachments/20170601/ca4b5f7c/attachment.html>