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Automated beam based alignment of the ALS quadrupoles

Conference ·
OSTI ID:114559
Knowing the electrical offset of the storage ring beam position monitors (BPM) to an adjacent quadrupole magnetic center is important in order to correct the orbit in the ring. The authors describe a simple, fast and reliable technique to measure the BPM electrical centers relative to the quadrupole magnetic centers. By varying individual quadrupole magnets and observing the effects on the orbit they were able to measure the BPM offsets in half the horizontal and vertical BPMs (48) in the ALS. These offsets were measured to an accuracy of better than 50{mu}m. The technique is completely automated and takes less than 3 hours for the whole ring.
Research Organization:
Lawrence Berkeley Lab., CA (US); Advanced Light Source (US)
Sponsoring Organization:
USDOE, Washington, DC (US)
DOE Contract Number:
AC03-76SF00098
OSTI ID:
114559
Report Number(s):
LBL--36434; CONF-950512--337; LBNL/ALS--561; ON: DE96001108
Country of Publication:
United States
Language:
English

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