ABSTRACT
ICALEPCS 2001

Abstracts



FRBT004 (Talk)

Presenter: Johannes van Zeijts (BNL)
email: johannes@bnl.gov
Review Status: Proceedings Ready - 03/29/02
FullText: pdf
Transparencies: pdf
Eprint: physics/0111066

Model Driven Ramp Control at RHIC

J. vanZeijts, Brookhaven National Laboratory {*}

At the Relativistic Heavy Ion Collider (RHIC), magnets are ramped from injection energy to storage energy in several minutes where it is to remain for several hours. The path up the ramp is marked by 'Stepstones' where the the optics of the machine, which can change dramatically when we perform a beta*-squeeze, is given in units like Quadrupole focussing strength or Corrector-Dipole angle. The machine is tuned at these Stepstones, and at Injection or Storage, by specifying physics properties like Tunes and Chromaticities. An on-line model server handles conversion to magnet strengths, and predicts the optics along the whole ramp. We will describe the underlying principles, and the client-server environment, including on-line model servers, Ramp Manager and Editor, and present operational experience with the system.
[1] J. Kewisch et.al., 'Ramp Management in RHIC', Proceeding PAC 99
[2] J. van Zeijts, CDEV Generic Servers for RHIC Commissioning and Operations, Proceeding ICALEPCS 99
{*} Work supported by US Department of Energy
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ICALEPCS 2001

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