Difference between revisions of "Run Planning Meeting Notes, December 16 - December 22, 2021"
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#* Rates are ~10% lower compared to previous LD<sub>2</sub> data taking period, see [https://halldweb.jlab.org/wiki/images/a/a3/Rate.png here]. Part of it is lower transmission but even accounting for this, normalized rates remains 6% lower (see trigger/PS, black disk symbols, [https://halldweb.jlab.org/wiki/images/d/da/Rates_ratios.png here]). | #* Rates are ~10% lower compared to previous LD<sub>2</sub> data taking period, see [https://halldweb.jlab.org/wiki/images/a/a3/Rate.png here]. Part of it is lower transmission but even accounting for this, normalized rates remains 6% lower (see trigger/PS, black disk symbols, [https://halldweb.jlab.org/wiki/images/d/da/Rates_ratios.png here]). | ||
#Plans | #Plans | ||
− | #* Continue running on LD<sub>2</sub> at 140 nA, 0/90 para and perp. | + | #* Continue running on LD<sub>2</sub> at 140 nA, 0/90 para and perp. Do one amorphous run today. |
#* Discussion on possible target change to L<sup>4</sup>He. | #* Discussion on possible target change to L<sup>4</sup>He. | ||
#* Status of possible CPP test. | #* Status of possible CPP test. |
Revision as of 15:44, 16 December 2021
Thursday December 16
- Last 24h:
- Smooth production on LD2 at 140 nA, 0/90 para and perp. Interrupted only by search for better spot on diamond (~1h see below) and ~1h of RF-related down time.
- Spectra from A. Somov.
- Issues
- JD70-105 degradation: Hovanes tried to find a new location that improved the 0/90 para and 45/135 para/perp coherent peaks, but to no avail.
- Target lost the Labview readout twice last night (2:20am and 5:50am). Chris Carlin came the first time and fixed it. The second time, we fixed it following his instruction and it worked.
- Rates are ~10% lower compared to previous LD2 data taking period, see here. Part of it is lower transmission but even accounting for this, normalized rates remains 6% lower (see trigger/PS, black disk symbols, here).
- Plans
- Continue running on LD2 at 140 nA, 0/90 para and perp. Do one amorphous run today.
- Discussion on possible target change to L4He.
- Status of possible CPP test.