12 GeV HMS Optics Data

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HMS optics page

  • The High Momentum Spectrometer (HMS) is a Q1-Q2-Q3-D magnet system.
  • New drift chamber were installed in the HMS for 12 GeV.
  • The HMS delta matrix has not been optimized in the 12 GeV era. Still using a delta matrix from the 6 GeV era.
  • All HMS magnets saturate when the magnets are set above 5 GeV.

HMS optics at low momentum

  • Any info on low momentum optics studies, add it here!

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.

HMS Optics Data Tables

HMS Optics at 6.6 GeV/c

Run Number Beam Energy (GeV) HMS Central Momentum (GeV/c) HMS Angle (Deg) Collimator Type Target Delta (%) Run Period /mss location Comment
4819 10.5965 6.59 -13.005 Sieve Slit -10, 0, +10 cm Carbon Foil N/A KaonLT (Autumn 2018) /spring17/raw/ 6.6 GeV/c Carbon-Sieve Data
4805 10.5965 6.59 -18.8 Large LH2 +0.34 KaonLT (Autumn 2018) /hallc/spring17/raw/ 6.6 GeV/c Delta Scan Data; NMR Readback = 1.84204 T
4806 10.5965 6.59 -18.8 Large LH2 +0.34 KaonLT (Autumn 2018) /hallc/spring17/raw/ 6.6 GeV/c Delta Scan Data; NMR Readback = 1.84204 T
4808 10.5965 6.59 -18.8 Large LH2 +0.34 KaonLT (Autumn 2018) /hallc/spring17/raw/ 6.6 GeV/c Delta Scan Data; NMR Readback = 1.83462 T
4811 10.5965 6.59 -18.8 Large LH2 +0.34 KaonLT (Autumn 2018) /hallc/spring17/raw/ 6.6 GeV/c Delta Scan Data; NMR Readback = 1.83462 T
4816 10.5965 6.59 -17.2 Large LH2 +6.84 KaonLT (Autumn 2018) /hallc/spring17/raw/ 6.6 GeV/c Delta Scan Data; NMR Readback = 1.83467 T
4817 10.5965 6.59 -17.2 Large LH2 +6.84 KaonLT (Autumn 2018) /hallc/spring17/raw/ 6.6 GeV/c Delta Scan Data; NMR Readback = 1.83467 T
4821 10.5965 6.59 -19.755 Large LH2 -3.41 KaonLT (Autumn 2018) /hallc/spring17/raw/ 6.6 GeV/c Delta Scan Data; NMR Readback = 1.831 T
4824 10.5965 6.59 -19.755 Large LH2 -3.41 KaonLT (Autumn 2018) /hallc/spring17/raw/ 6.6 GeV/c Delta Scan Data; NMR Readback = N/A
4825 10.5965 6.59 -19.755 Large LH2 -3.41 KaonLT (Autumn 2018) /hallc/spring17/raw/ 6.6 GeV/c Delta Scan Data; NMR Readback = 1.831 T
4821 10.5965 6.59 -19.755 Large LH2 -3.41 KaonLT (Autumn 2018) /hallc/spring17/raw/ 6.6 GeV/c Delta Scan Data; NMR Readback = 1.831 T

HMS Optics at 6.8 GeV/c

Run Number Beam Energy (GeV) HMS Central Momentum (GeV/c) HMS Angle (Deg) Collimator Type Target Delta (%) Run Period /mss location Comment
14970 10.549 6.792 -12.495 Sieve Slit +/-8 cm Carbon Foil N/A PionLT (Summer 2022) /hallc/c-pionlt/raw/ 6.8 GeV/c Carbon-Sieve Data
14971 10.549 6.792 -12.495 Sieve Slit +/-8 cm Carbon Foil N/A PionLT (Summer 2022) /hallc/c-pionlt/raw/ 6.8 GeV/c Carbon-Sieve Data
14972 10.549 6.792 -12.495 Sieve Slit +/-8 cm Carbon Foil N/A PionLT (Summer 2022) /hallc/c-pionlt/raw/ 6.8 GeV/c Carbon-Sieve Data
14973 10.549 6.792 -12.495 Sieve Slit 0.5% Carbon Foil N/A PionLT (Summer 2022) /hallc/c-pionlt/raw/ 6.8 GeV/c Carbon-Sieve Data
16039 10.5965 6.792 -15.8 Large LH2 +8 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 6.8 GeV/c Delta Scan Data
16040 10.5965 6.792 -15.8 Large LH2 +8 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 6.8 GeV/c Delta Scan Data
16044 10.5965 6.792 -17.73 Large LH2 0 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 6.8 GeV/c Delta Scan Data
16047 10.5965 6.792 -19.87 Large LH2 -8 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 6.8 GeV/c Delta Scan Data
16050 10.5965 6.792 -19.87 Large LH2 -8 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 6.8 GeV/c Delta Scan Data
16051 10.5965 6.792 -19.87 Large LH2 -8 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 6.8 GeV/c Delta Scan Data
16052 10.5965 6.792 -19.87 Large LH2 -8 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 6.8 GeV/c Delta Scan Data
16054 10.5965 6.792 -19.87 Large LH2 -8 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 6.8 GeV/c Delta Scan Data
16056 10.5965 6.792 -19.87 Large LH2 -8 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 6.8 GeV/c Delta Scan Data
16060 10.5965 6.792 -19.87 Large LH2 -8 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 6.8 GeV/c Delta Scan Data


HMS Optics at 5.6 GeV/c

Run Number Beam Energy (GeV) HMS Central Momentum (GeV/c) HMS Angle (Deg) Collimator Type Target Delta (%) Run Period /mss location Comment
16023 10.549 5.587 -13 Sieve Slit 0.5% Carbon Foil N/A PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.6 GeV/c Carbon-Sieve Data
16030 10.549 5.587 -13 Sieve Slit 0.5% Carbon Foil N/A PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.6 GeV/c Carbon-Sieve Data
16031 10.549 5.587 -13 Sieve Slit 0.5% Carbon Foil N/A PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.6 GeV/c Carbon-Sieve Data
16032 10.549 5.587 -13 Sieve Slit 0.5% Carbon Foil N/A PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.6 GeV/c Carbon-Sieve Data
16033 10.549 5.587 -13 Sieve Slit 0.5% Carbon Foil N/A PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.6 GeV/c Carbon-Sieve Data
16024 10.549 5.587 -13 Sieve Slit +/-8 cm Carbon Foil N/A PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.6 GeV/c Carbon-Sieve Data
16025 10.549 5.587 -13 Sieve Slit +/-8 cm Carbon Foil N/A PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.6 GeV/c Carbon-Sieve Data
16034 10.549 5.587 -13 Sieve Slit +/-8 cm Carbon Foil N/A PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.6 GeV/c Carbon-Sieve Data
16035 10.549 5.587 -13 Sieve Slit +/-8 cm Carbon Foil N/A PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.6 GeV/c Carbon-Sieve Data
16188 8.479 5.587 -17.235 Large LH2 +8 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.6 GeV/c Delta Scan Data
16189 8.479 5.587 -17.235 Large LH2 +8 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.6 GeV/c Delta Scan Data
16194 8.479 5.587 -19.505 Large LH2 0 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.6 GeV/c Delta Scan Data
16195 8.479 5.587 -19.505 Large LH2 0 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.6 GeV/c Delta Scan Data
16196 8.479 5.587 -19.505 Large LH2 0 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.6 GeV/c Delta Scan Data
16197 8.479 5.587 -19.505 Large LH2 0 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.6 GeV/c Delta Scan Data
16198 8.479 5.587 -21.875 Large LH2 0 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.6 GeV/c Delta Scan Data
16199 8.479 5.587 -21.875 Large LH2 0 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.6 GeV/c Delta Scan Data


HMS Optics at 5.878 GeV/c

Run Number Beam Energy (GeV) HMS Central Momentum (GeV/c) HMS Angle (Deg) Collimator Type Target Delta (%) Run Period /mss location Comment
14986 10.549 5.878 -21.67 Large LH2 0 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.9 GeV/c HeeP Coin Data
14987 10.549 5.878 -21.67 Large LH2 0 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.9 GeV/c HeeP Coin Data
14988 10.549 5.878 -21.67 Large LH2 0 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.9 GeV/c HeeP Coin Data
14989 10.549 5.878 -21.67 Large LH2 0 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.9 GeV/c HeeP Coin Data
14991 10.549 5.878 -21.67 Large LH2 0 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.9 GeV/c HeeP Coin Data
14992 10.549 5.878 -21.67 Large LH2 0 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.9 GeV/c HeeP Coin Data
14993 10.549 5.878 -21.67 Large LH2 0 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.9 GeV/c HeeP Coin Data
14994 10.549 5.878 -21.67 Large 0.5% Carbon Foil N/A PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.9 GeV/c Carbon NO SIEVE Data
16186 8.479 5.878 -12.5 Sieve Slit 0.5% Carbon Foil N/A PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.9 GeV/c Carbon-Sieve Data
16187 8.479 5.878 -12.5 Sieve Slit +/-8 cm Carbon Foil N/A PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.9 GeV/c Carbon-Sieve Data
16178 8.479 5.878 -15.63 Large LH2 +8 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.9 GeV/c Delta Scan Data
16179 8.479 5.878 -15.63 Large LH2 +8 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.9 GeV/c Delta Scan Data
16180 8.479 5.878 -17.97 Large LH2 0 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.9 GeV/c Delta Scan Data
16181 8.479 5.878 -17.97 Large LH2 0 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.9 GeV/c Delta Scan Data
16184 8.479 5.878 -20.38 Large LH2 -8 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.9 GeV/c Delta Scan Data
16185 8.479 5.878 -20.38 Large LH2 -8 PionLT (Summer 2022) /hallc/c-pionlt/raw/ 5.9 GeV/c Delta Scan Data
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