Fast feedback systems for orbit correction in the TESLA Linear Collider

Author

Kohaupt, R.D. ; Reyzl, I.

Author_Institution

DESY, Hamburg, Germany

Volume

2

fYear

1999

fDate

1999

Firstpage

1171

Abstract

In the TESLA Linear Collider feedback systems will provide an orbit correction within the bunch train. To limit the reduction in the targeted luminosity of 3.1·10³⁴ cm^-2 s^-1 due to beam separations to less than a few percent, the collisions have to be vertically stabilized within a fraction of the beam spot size of 5 nm. One system, located in the beam delivery system (BDS), is used to correct vertical bunch offsets generated upstream in the main linear accelerator and BDS. The second at the interaction point brings the two beams into collision using the beam-beam deflection method. Both digital feedback systems provide a correction on a bunch-to-bunch basis. Their design is based on classical proportional-integral control. This paper describes the feedback system designs. Results of simulations are presented

Keywords

accelerator control systems; beam handling techniques; digital control; electron accelerators; feedback; linear colliders; two-term control; TESLA Linear Collider; beam delivery system; beam-beam deflection method; digital feedback systems; interaction point; orbit correction; proportional-integral control; simulation; vertical bunch offsets; Feedback; Linear accelerators; Lorentz covariance; Niobium; Particle beams; Pi control; Predictive models; Signal processing; Superconducting magnets; Vibrations;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1999. Proceedings of the 1999

Conference_Location

New York, NY

Print_ISBN

0-7803-5573-3

Type

conf

DOI

10.1109/PAC.1999.795485

Filename

795485