LCLS Control System Dipole Magnet Polarity Requirement
Learn about the LCLS control system's requirement for all dipole magnets to have positive IVB polynomials. This involves reversing the sign of one dipole's IVB to ensure proper series connection. Explore details about the specific dipole, engineering information, and adjustments made for optimal operation.
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Presentation Transcript
Note: the LCLS Control System requires all dipole magnets powered in series to have positive IVB polynomials (i.e. BDES[kG-m] > 0 gives IDES[A] > 0). To that end, this dipole s IVB (which is properly negative) has had its sign reversed both in Oracle and in EPICS.
I = 250 A engineering type: SLAC drawing number: SLAC magnet bar-code: vendor serial number: when measured: when analyzed: MAD assignment: 0.788D11.50 SA-237-005-02-R2 4523 25 04-Jun-2018 10:29:18 04-Sep-2022 BCX361
BCX361: BL/BL0 vs X @ 250 A quadrupole component artificially removed
main ramped down from 250 A to 0, then trim sets zero field Itrim = -0.2581 A Itrim = 0 Imain = 0 wiredat.ru2 name: # of main coil turns: # of trim coil turns: ratio of turns (Nmain/Ntrim): ratio of slopes (measured): IMMO (amps): BMMO (main coil amps): BCX361T 48 82 0.5854 0.5954 [-3,+3] [-5.0389,+5.0389]
