Quadrupole Misalignments and Steering in Long Linacs | Zendy

Gennady Stupakov | Zendy

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Quadrupole Misalignments and Steering in Long Linacs

Author(s) -

Gennady Stupakov

Publication year - 2000

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/763841

Subject(s) - thermal emittance , quadrupole , jitter , physics , linear particle accelerator , orbit (dynamics) , beam optics , lattice (music) , offset (computer science) , computational physics , optics , computer science , particle accelerator , acoustics , beam (structure) , aerospace engineering , engineering , atomic physics , telecommunications , programming language

We present a study of orbit jitter and emittance growth in a long linaccaused by misalignment of quadrupoles. First, assuming a FODO lattice, wederive analytical formulae for the RMS deviation of the orbit and the emittancegrowth caused by random uncorrelated misalignments of all quadrupoles. We thenconsider an alignment algorithm based on minimization of BPM readings with agiven BPM resolution and finite mover steps.

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