LCLS Stripline BPM Overview
Beam Position Monitors sense the passage of the beam when it induces a signal in the pickup electrodes mounted in the beam waveguide. This induced signal is of low current but can be 10's of volts for several nanoseconds, in synch with the beam's arrival. This signal is put directly on to a high quality coax to the receiving electronics.
In addition to this readback pulse, the stripline BPM system generates a calibration pulse that is sent to the striplines to correct for signal gain variation and drift. This is performed between beam pulses.
LCLS Stripline BPM Processor Engineering Specification (DRAFT)
LCLS BPM Data Acquisition System WPPB40
2022 SLACPAS Steve Smith BPM Talk Slides
LCLS BC1 rectangular BPM, beam left to right
LCLS-II DOG1 BPM, beam left to right
LCLS Cavity BPMs
LCLS-II undulator hall cavity BPM
LCLS-II cavity BPM electronics in Building 913
LCLS Cavity BPM Calibration
LCLS Cavity BPM Receivers Network Information
ATCA BPMs (Stripline)
BPM AMC Card Testing GUI
BPM AMC Card Testing Procedure
2-Slot Crate Procedure & Manual
4-Chan_BPM_Measurements.xlsx
LCLS II BPM-C04 Status List.xlsx
PC_379_396_03_C04
Trello Board
Production BPM's
Vacuum Structure Testing
Linac DTF
Read BPM ATCA Information
Cavity
PC_379_396_13_C04
PC-290-201-14-C01
LCLS_CAVITY_BPM_PLL_BOARD - PC-290-201-15-C03
Cavity BPM Chassis Tracker
Cavity AMC Testing
Insitu Cavity AMC Testing
Cavity BPM Test Procedure
LCLS Cavity BPM Receivers Network Information
VME BPMs
Trouble shooting guide for VME based BPMs
VME Test Stand Overview for BPMs
General Notes
To enable BPM processing when no beam rate
To enable
In IOC console, execute these commands:
cexpsh("-c","fidProcessBypass=(int)1")
cexpsh("-c","fidProcessHasBeam=(int)1")
To disable
In IOC console, execute these commands:
cexpsh("-c","fidProcessBypass=(int)0")
cexpsh("-c","fidProcessHasBeam=(int)0")
OR
reboot IOC
BPM Ironing
TPR MSGDLY
MORE TO FOLLOW
LCLS-II HE
LCLS-II HE Installation Information Checklist
LCLS-II General
BPM Controls Installation Sharepoint Directory