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FEEPS Reset Instructions

This guide provides instructions on how to reset the FEEPS (Front End Energy Protection System), including the conditions required for reset, the reset process, and troubleshooting steps. It also includes information on how to gather information from the user and check the status of ion pumps and the beamline RGA.

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FEEPS Reset Instructions

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  1. FEEPS Reset Instructions

  2. Background • FEEPS Function: to protect the Front End • Implication for Users: cannot take beam while FEEPS is tripped • Purpose of Instructions • Define conditions required for reset • Explain the reset process

  3. Scope • Conditions for reset by FC or Operator • The fault did not cause a beam dump AND • The fault was caused by user vacuum OR • The fault was caused by a FE vacuum fault downstream of PS1

  4. How will you be notified when there is a FEEPS fault? • A user will call 2-0101. • We had a vacuum trip. • Can you open our FEV? • Our BIV is closed. • I can’t open my shutter.

  5. Step 1: Gather Information • If the user hasn’t already told you, ask if he/she knows what caused the fault. • Often, the user mentions beamline vacuum work or suspected outgassing.

  6. Step 2: User BLEPS Reset • Ask the user to reset the Beamline EPS (BLEPS). • Often necessary before FEEPS will reset. • User may need to call beamline contact for assistance.

  7. Step 3: Window? • Determine whether the beamline has a commissioning/ beryllium window. Figure 1: Path to FEEPS screen. The commissioning window is circled in blue.

  8. For beamlines with a commissioning or beryllium window…

  9. Steps 4, 5, 6: Reset • The FC or Operator may attempt to reset the FEEPS. • Open controls • Click “Reset” • Open FEV/BIV Figure 2: Path for resetting FEEPS

  10. Note: Fault indicators Note: Legend Note: Status of FE components Step 7: Screen Specifics

  11. For windowless beamlines…

  12. Step 8: Check Ion Pumps • All but one ion pump should be in the 10-9 range or less.

  13. IP1:_______ IP2:_______ IP3:_______ IP4:_______ IP5:_______ IP6:_______ IP7:_______ IP8:_______ IP9:_______ Step 8 (continued) 9-BM • Differences between BM and ID beamlines: 9 ion pumps vs. 7 9-ID

  14. Step 9: RGA • Check beamline RGA • Pressure range 10-9 or less Beamline RGA:_____

  15. Step 10: Reset • If pressure conditions in steps 8 and 9 are satisfied, reset the fault and open the FEV and BIV. • Steps 4-7 • If not, contact the Vacuum Group on-call engineer.

  16. For all beamlines…

  17. Step 11: In case of difficulty • If a FEEPS fault does not reset or occurs more than 3 times per shift, contact the vacuum on-call engineer. • File an RMD report. • If call-ins are necessary, notify the on-call Floor Coordinator. • When in doubt, the Operator is always welcome to call the on-call Floor Coordinator for assistance in troubleshooting.

  18. Step 12: Manual Reset • When EPICS is not working • Computer communications problem • Beamline is too new ES102

  19. Step 13: Documentation • Document the occurrence in the shift log. • Time • Beamline • Vacuum readings that were checked for windowless beamlines (ion pumps, RGA) • Whether the fault reset without difficulty or required further action

  20. Other Information • Occasional User Requests: • Close the FEV or BIV manually in preparation for beamline vacuum work • Open the FEV or BIV after vacuum work, when there is no FEEPS trip • Floor Coordinators and Operators are permitted to grant such requests.

  21. No FEEPS Fault? Legend ACIS: Global online, shutter status ID: Gap in mm Front End: EPS, MPS, DIW, VAC Positions: SV, FEV, BIV, PS1 Beamline: VAC, PER APS Enable: A, B, C, D, E (stations) PSS Fault 2-BM: Typical FEEPS fault; also a PSS fault. 8-BM, 9-BM: BLEPS fault only.

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