Physics Shift Report

Start Date: 09-24-2017
End Date: 09-28-2017
Start Run: 9683
End Run: 9772
Physics shifter: Tanaz A. Mohayai

Summary of Runs¶

Run Number	Purpose
9683 - 9699	Emittance reduction - LH2
9701 - 9714	LH2 filling - 200 MeV/c optimisation, scaling from 3-200+M3-Test1
9715 - 9716	LH2 filling - 200 MeV/c optimisation, momentum tuning
9717 - 9721	LH2 filling - momentum scan
9717 - 9720	LH2 filling - momentum scan
9721	Beamline tuning at 140 MeV/c for better matching - LH2 full - Solenoid mode
9723 - 9734, 9736	Emittance reduction - LH2 full - Solenoid mode
9735	Beamline tuning at 140 MeV/c for better matching - LH2 full - Solenoid mode
9736 - 9747	Emittance reduction - LH2 full - Solenoid mode
9749 - 9771	Emittance reduction - LH2 full - Solenoid mode
9772	Scattering study, LH2 full - Cooling Channel magnets OFF

Elog, CDB, and Reconstruction¶

Elog entries are ok.

CDB uploaded ok with the exception of runs 9709, 9722, 9731, 9746, 9748, 9753.

Online reconstruction is ok with the exception of runs 9709, 9722, 9731, 9734, 9746, 9748, 9751, 9753.

TKD had poor effeciency, and there were very few tracks, in particular in Station4 (see SciFiReduce_TKD_triplet_xy.png).

This feature has been identified and reported by C. Rogers (https://micewww.pp.rl.ac.uk/projects/analysis/wiki/2017-09-23_physics-shifter). It has been appearing in runs 9683-9692 and the experts have now fixed it (see SciFiReduce_TKD_triplet_xy_9733.png).

The issue with the 9740 live TOF space point reconstruction (see TofReduce_tof_spx-9740.png) seems to have been fixed.

Run Efficiencies¶

name	runs	lmc1234	tof1	tof2	time	nevents	us cut
2017-02-2 3-200-9760	[9760]	541869	491778	105515	1 hrs 22 mins	152295	5345
2017-02-2 6-200-9761	[9761]	532743	691559	378773	1 hrs 27 mins	192582	11358
2017-02-2 10-200-9763	[9763]	664063	1137000	340190	1 hrs 45 mins	235176	19529

Analysis¶

C. Rogers noticed a bump in the TKD momentum at ~ 50 MeV/c (below) in run 9726 (red is all particles, black is muons in tkd_p.png).

The PzvsPt of the same run is in PzvsPt_2.png (muons only). A. Dobbs believes this to be a reconstruction issue (particularly for the new MAUS v-3.0.0).