Hysteresis Compensation

Dedicated MD 2025-04-02

2 min read

Plans

small changes changes tune through chromaticity.

Measure tune with autotune, along flat bottom. If we switch off the RF maybe we still see the tune. Maybe use first few points.

Go from H and V tune to change in fields ().

Important

Flatten the QF and QD IREF before starting to take measurements

  • check 26 GeV hysteresis on MD2*

  • 1h operational hysteresis tests

    • Standard supercycles: SFT, SFT LHC1, SFT LHC1 spare, SFT AWAKE, SFT HIRADMT1 SFTHIRADMT2, not autoregressive, short parallel MD

  • Make spill nice, can we do 5e12?

  • 2nd hour Flatten MD1

Measure cycles

We use the alotted time to measure cycles without MD1.

Supercycles

SFT type supercycles

  • SFTPRO1 - 3x ZERO - SFTPRO1 - 3x ZERO
  • SFTPRO1 - MD1 - SHIP - MD1 - SFTPRO1 - MD1
  • SFTPRO1 - SHIP - SFTPRO1 - 4xZERO

Other physics supercycles

  • SFTPRO1 - AWAKE1 - 3x ZERO - SFTPRO1 - AWAKE1 - 3x ZERO
  • SFTPRO1 - HIRADMT1 - 3x ZERO - SFTPRO1 - HIRADMT1 - 3x ZERO
  • SFTPRO1 - HIRADMT2 - 3x ZERO
  • SFTPRO1 - HIRADMT2

LHC-type supercycles

  • SFTPRO1 - ZERO - LHC1
  • SFTPRO1 - ZERO - LHC3
  • SFTPRO1 - ZERO - LHCINDIV - 9x ZERO
  • SFTPRO1 - ZERO - LHC4
  • SFTPRO1 - ZERO - LHCPILOT - 6x ZERO
  • SFTPRO1 - ZERO - LHCPILOT - 3x ZERO
  • SFTPRO1 - ZERO - LHCPILOT

PRECYCLE

  • LHCION1 - ZERO (LHC_ION_1_Inj_Q26_Pb82_2023_V1)

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