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Power Supply System Impacts. WBS 1.1.3 Power Supply System Level 3 Manager Nancy Grossman FNAL Dec 11, 2001. Update of PS Needs. V109 has one more 6-3-120 (now 4 instead of 3) and runs at a higher current (1050 amps) Requires another 500 KW supply to get the needed volts.

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power supply system impacts

Power Supply System Impacts

WBS 1.1.3 Power Supply System

Level 3 Manager

Nancy Grossman

FNAL

Dec 11, 2001

update of ps needs
Update of PS Needs
  • V109 has one more 6-3-120 (now 4 instead of 3) and runs at a higher current (1050 amps)
    • Requires another 500 KW supply to get the needed volts.
    • Have space for 1 more 500 KW in TSB.
    • Only remaining 500 KW PS are old Transrex’s, we are checking on getting an additional one (or other options, and checking the ramp).
  • V110 has one less EPB (now 5 instead of 6) and runs at a higher current (1400 amps)
    • Does not require an PS changes, will need to re-calculate the ramp.
  • Q109 is now two different quads (3Q120, 3Q60) which can run on one supply.
  • Two possible 3Q120’s (quads) in the carrier tunnel (unlined region)
    • Will need an additional PS each (there is room for them and we have spares)
  • Cable lengths and costs all need to be re-estimated.
update of regulation needs
Update of Regulation Needs
  • Magnet Strings regulation requirements are looser with the new beam optics.
    • Could use less regulation than we have budgeted for, if this remains true.
    • Not clear if loosening the regulation is worth the money saved.
    • Don’t need to decide until FY2003.
    • Costed filters for all 7 strings, and BmLB systems for 3 strings, HOLEC transductors and special FNAL electronics for all 7 strings.
summary
Summary

All these comments are very preliminary and Steve Hays will check in detail to see what are the final implications.

  • Main Changes:
    • Need extra 500 KW for V109.
    • Need 2 more quad PS if put quads in carrier tunnel.
    • PS regulation requirements are looser.
    • Cable lengths and numbers.
    • (need to re-do ramp calculations and cable calculations/costs)
  • Implications:
    • Can we get additional cable (500 kcm) or is it too late? Not sure if we will need it or not…
    • Additional costs are for 500 KW PS and quads and cables. Estimate several ten’s of thousands of dollars (FY$98).
    • Might be able to save money on PS regulation, but we would need to think long and hard before doing that.
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