2017-12-05-physics-shifter » History » Version 5
Rogers, Chris, 08 December 2017 13:00
| 1 | 1 | Rogers, Chris | h1. 2017-12-05-physics-shifter |
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| 3 | h1. 2017-11-30 physics-shifter |
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| 6 | *Start Date:* 2017-12-05 |
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| 7 | *End Date:* |
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| 8 | *Start Run:* 10432 |
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| 9 | *End Run:* |
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| 10 | *Physics shifter*: Chris Rogers |
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| 12 | h2. Summary |
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| 14 | The aim was to get the empty data for corresponding LiH full settings: |
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| 16 | * 5th December - possibly recover magnets following a quench |
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| 17 | 2 | Rogers, Chris | * 6th December - 2016-05.1 setting (flip mode, 140 MeV/c) |
| 18 | * 7th December - 2017-02-7 setting (flip mode, 140 MeV/c) |
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| 19 | * 8th December - 2017-02-8 setting (flip mode, 170 MeV/c) |
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| 20 | 1 | Rogers, Chris | |
| 21 | h3. Elog, CDB |
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| 24 | h3. Online reco |
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| 27 | h2. Analysis |
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| 30 | h3. 5th December |
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| 31 | 2 | Rogers, Chris | |
| 32 | 3 | Rogers, Chris | No data |
| 33 | 2 | Rogers, Chris | |
| 34 | h3. 6th December |
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| 35 | 4 | Rogers, Chris | |
| 36 | Checked: |
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| 37 | * TOF1 dt is 50 ps, still not great; TOF0 and TOF2 slab conversion to space point efficiency ~ 97-98 % |
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| 38 | * TKU, TKD has no obvious dead area |
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| 39 | * Amplitude change looks okay. Notice more scraping than with M2D data sets. |
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| 40 | * I spend some time staring at the chi2 plots in TKD. TKD has a longer tail, but I think it is not significant. Comparing e.g. chi2/ndf = 4, with the peak chi2, the ratio is < 10^-3 for both TKU and TKD. But TKD has a longish tail beyond - all at < 10^-3 level, so did not dig further. I also note TKD has fewer ndf, potentially indicating less successful track finding from PR; again, something to dig into (but data is probably okay). |
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| 41 | 5 | Rogers, Chris | * I noted onrec shows lots of electrons in EMR for the diff8 setting. Why is that? |