2017-11-19 physics-shifter¶

Start Date: 2017-11-14
End Date: 2017-11-25
Start Run: 10103
End Run:
Physics shifter: Chris Rogers

Summary¶

The aim was to get the empty data for corresponding lH2 full settings:

• 14th Nov: Beam tests
• 15th Nov: 2017-02-3 (flip mode M2D off @ 140 MeV/c)
• 16th Nov: 2017-02-4 (flip mode M2D off @ 140 MeV/c)
• 17th Nov: 2017-02-5 (solenoid mode M2D on @ 140 MeV/c)
• 18th - 20th Nov: straight tracks (140-240 MeV/c)

There was a major power outage on 20th November as MICE was preparing to go to 2017-02-6 setting.

Elog, CDB¶

Fine

Online reco¶

Fine

Analysis¶

Online reconstruction was originally run with Minuit pattern recognition - which was shown to erroneously lead to low pt tracks reconstructed with 50 MeV/c pz. This was fixed and since then data looks fine.

TKU space points station 1 through 5¶

No obvious holes:

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TKD space points station 1 through 5¶

No obvious holes:

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TK momentum reconstruction¶

Chi2/ndf looks reasonable; peaked at 1

No evidence of the "bump" at 50 MeV/c and low pt

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TOF¶

TOF space point finding efficiencies look greatly improved over recent runs. (Define efficiency => number of slab pairs that form a space point)

	tof0	tof1	tof2
all	0.97	1.0	0.985
us cut	1.0,	1.0	0.995
ds cut	1.0,	1.0	0.995

TOF slab delta t looks good for TOF0 and TOF2. For TOF1, slab delta t is not great. Expert has been contacted.

TOF0:

TOF1:

TOF2:

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TOF peaks look normal (i.e. peak for electrons, muons and pions)

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TOF vs Tracker¶

TOF and track appear to be consistent

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Amplitude¶

Amplitude upstream and downstream looks consistent. Pattern of losses is comparable to other datasets.

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Straight Tracks¶

John Nugent has looked at the straight tracks data and reports that it looks okay.