A realtime feedback microprocessor for the TEVATRON

Author

Herrup, D.A. ; Chapman, L. ; Franck, A. ; Groves, T. ; Lublinsky, B.

Author_Institution

Fermi Nat. Accel. Lab., Batavia, IL, USA

fYear

1993

fDate

17-20 May 1993

Firstpage

2249

Abstract

A feedback microprocessor has been built for the TEVATRON. Its inputs are realtime accelerator measurements, data describing the state of the TEVATRON, and ramp tables. The microprocessor includes a finite state machine. Each state corresponds to a specific TEVATRON operation. Transitions between states are initiated by the global TEVATRON clock. Each state includes a cyclic routine which is called periodically and where all calculations are performed. The output corrections are inserted onto a fast TEVATRON-wide link from which the power supplies will read the realtime corrections. We also store all of the input data and output corrections in a set of buffers which can easily be retrieved for diagnostic analysis. I describe use of this device to control the TEVATRON tunes, and discuss other uses

Keywords

beam handling techniques; computerised instrumentation; feedback; microprocessor chips; particle beam diagnostics; proton accelerators; real-time systems; synchrotrons; tuning; TEVATRON; TEVATRON tune control; diagnostic analysis; fast TEVATRON-wide link; finite state machine; global TEVATRON clock; input data; output corrections; power supplies; ramp tables; realtime accelerator measurements; realtime corrections; realtime feedback microprocessor; Acceleration; Computer buffers; Feedback; Interpolation; Lattices; Magnetic separation; Microprocessors; Particle separators; Resonance; Stability;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1993., Proceedings of the 1993

Conference_Location

Washington, DC

Print_ISBN

0-7803-1203-1

Type

conf

DOI

10.1109/PAC.1993.309284

Filename

309284