Difference between revisions of "12 GeV HMS Optics Data"
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** Runs 4816-17 HMS at 17.20 deg Lh2, Runs 4814-15 Dummy | ** Runs 4816-17 HMS at 17.20 deg Lh2, Runs 4814-15 Dummy | ||
** Runs 4821,24,25 HMS at 19.755deg LH2, Run 4822 Dummy. | ** Runs 4821,24,25 HMS at 19.755deg LH2, Run 4822 Dummy. | ||
| + | * Series of SHMS (proton) and HMS (electron) ep coincidence | ||
| + | **SHMS p = +4.840 ang = 26.147 HMS p = -6.590 ang = 18.845 | ||
| + | ** Runs 4855-4860,4862-4963 LH2 | ||
| + | ** run 4864 dummy | ||
| + | *Series of optics 1 with Sieve runs | ||
** Optic 1 target Run 4819 at 13.005deg. | ** Optic 1 target Run 4819 at 13.005deg. | ||
** Optic 1 target RUn 4820 at 13.005deg (modified Q1 current). | ** Optic 1 target RUn 4820 at 13.005deg (modified Q1 current). | ||
Revision as of 16:37, 18 September 2020
Contents
HMS optics page
Introduction
- HMS is a Q1-Q2-Q3-D magnet system
- New drift chamber were installed in HMS for 12 GeV. Need to check the
- HMS delta matrix has not been optimized in the 12 GeV era. Still delta matrix from the 6 GeV era.
- All HMS magnets saturate when magnet is set above 5 GeV.
HMS optics at low momentum
HMS optics at 6.6 GeV
- Fall 2018 take series of optics and elastic runs.
- List of runs at Kaon Run list.
- Initial set of runs (4734-4741,4768-4773) with Optics 1 target (-10,0,10) and varied dipole and Quads to try and get ytar vs yptar
- Online Conclusion that it was not converging.
- Series of elastic runs with HMS angle changes to move the elastic across the focal plane. all runs at nominal magnet settings.
- Runs 4805-4811 HMS at 18.79deg LH2, Runs 4812-13 DUmmy
- Runs 4816-17 HMS at 17.20 deg Lh2, Runs 4814-15 Dummy
- Runs 4821,24,25 HMS at 19.755deg LH2, Run 4822 Dummy.
- Series of SHMS (proton) and HMS (electron) ep coincidence
- SHMS p = +4.840 ang = 26.147 HMS p = -6.590 ang = 18.845
- Runs 4855-4860,4862-4963 LH2
- run 4864 dummy
- Series of optics 1 with Sieve runs
- Optic 1 target Run 4819 at 13.005deg.
- Optic 1 target RUn 4820 at 13.005deg (modified Q1 current).
- Single carbon Run 4818 at 13.005deg.
HMS optics at 6.3 GeV
- Fall 2018 take series of optics and elastic runs.
- List of runs at Kaon Run list.
- Initial set of runs 4756-4757 with HMS dipole at +0.685% above nominal and Q1 + 0.3% with Optics 1 target
- Set of runs 4758-65 with HMS dipole at at +0.685% above nominal and Quads at nominal with Optics 1 target.
- Run 4774 with HMS magnets all at nominal with Optics 1 target.
- Run 4775 with HMS dipole at 1.002*nominal with Optics 1 target.
- Run 4776 with HMS dipole at 1.003*nominal with Optics 1 target.
- Run 5335 with HMS dipole at nominal for 6.358 with Optics 1 target.
HMS optics at momentum greater than 5 GeV
- Initial study of HMS saturation in Spring18
- Looked at the yptar versus ytar correlation at HMS momentum 5.1 to 5.9 GeV
- Fixed the Q1-Q2-Q3 to settings for the given set momentum and then varies the HMS dipole
- Logbook entry about the measurement.
