HMS-optics-data-wiki-page

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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 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.