Beam-based alignment technique for the SLC (Stanford Linear Collider) linac

Conference · Wed Mar 01 04:00:00 EST 1989

OSTI ID:6251003

Adolphsen, C E; Lavine, T L; Atwood, W B; Himel, T M; Lee, M J; Mattison, T S; Pitthan, R; Seeman, J T; Williams, S H; Trilling, G H

Misalignment of quadrupole magnets and beam position monitors (BPMs) in the linac of the SLAC Linear Collider (SLC) cause the electron and positron beams to be steered off-center in the disk-loaded waveguide accelerator structures. Off-center beams produce wakefields which limit the SLC performance at high beam intensities by causing emittance growth. Here, we present a general method for simultaneously determining quadrupole magnet and BPM offsets using beam trajectory measurements. Results from the application of the method to the SLC linac are described. The alignment precision achieved is approximately 100 ..mu..m, which is significantly better than that obtained using optical surveying techniques. 2 refs., 4 figs.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (USA)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 6251003
• Report Number(s): SLAC-PUB-4902; LBL-27057; CONF-890335-160; ON: DE89012279
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430303* -- Particle Accelerators-- Experimental Facilities & Equipment
ACCELERATOR FACILITIES
ACCELERATORS
ALIGNMENT
BEAM BENDING MAGNETS
BEAM MONITORS
BEAM OPTICS
BEAM POSITION
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
EQUIPMENT
LINEAR ACCELERATORS
MAGNETS
MEASURING INSTRUMENTS
MONITORS
ORBITS
STANFORD LINEAR COLLIDER
TRAJECTORIES
WAVEGUIDES