Beam determination of quadrupole misalignments and beam position monitor biases in the SLC linac
Misalignments of magnetic quadrupoles and biases in beam position monitors (BPMs) in the Stanford Linear Collider (SLC) linac can lead to a situation in which the beam is off-center in the disk-loaded waveguide accelerator structure. The off-center beam produces wakefields which can limit SLC performance by causing unacceptably large emittance growth. We present a general method for determining quadrupole misalignments and BPM biases in the SLC linac by using beam trajectory measurements. The method utilizes both electron and positron beams on opposite rf cycles in the same linac lattice to determine simultaneously magnetic quadrupole misalignments and BPM biases. The two-beam trajectory data may be acquired without interrupting SLC colliding beam operations. 2 refs., 5 figs.
- Research Organization:
- Stanford Linear Accelerator Center, Menlo Park, CA (USA)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 7010276
- Report Number(s):
- SLAC-PUB-4720; CONF-881049-30; ON: DE89002393
- Resource Relation:
- Conference: Linear accelerator conference, Williamsburg, VA, USA, 3 Oct 1988; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BEAM POSITION
ALIGNMENT
STANFORD LINEAR COLLIDER
BEAM OPTICS
BEAM EMITTANCE
BEAM MONITORS
QUADRUPOLAR CONFIGURATIONS
WAVEGUIDES
ACCELERATOR FACILITIES
ACCELERATORS
CLOSED CONFIGURATIONS
LINEAR ACCELERATORS
MAGNETIC FIELD CONFIGURATIONS
MEASURING INSTRUMENTS
MONITORS
MULTIPOLAR CONFIGURATIONS
430200* - Particle Accelerators- Beam Dynamics
Field Calculations
& Ion Optics