Closed-orbit correction of the NSLS VUV ring
We describe the results obtained from the orbit correction system in the NSLS VUV storage ring which consists of 24 PUE stations and 16 horizontal and vertical correction dipoles. The data were obtained by the PUEREAL module of the RING control program which provides automatic switching of the signal from individual electrodes of the PUE stations and provides a readout at harmonic of the rf frequency. The closed orbit is then calculated and corrected by measured displacements of the PUE's from the adjacent quadrupoles. The ORBIT module of the RING program was used to minimize the RMS orbit deviations choosing the most effective correctors and calculating their strengths. For the horizontal case, the correction was accomplished using 3 correctors in two iterations starting with RMS values X = 2.9 mm to X = 0.9 mm. Vertically three iterations and 6 correctors were required to correct the RMS value from Z = 6.8 nm to Z = 0.8 mm.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 6442307
- Report Number(s):
- BNL-32633; CONF-830311-13; ON: DE83009134
- Resource Relation:
- Conference: Particle accelerator conference, Santa Fe, NM, USA, 21 Mar 1983; Other Information: Portions are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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CORRECTIONS
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ORBITS
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ELECTROMAGNETIC RADIATION
MEASURING INSTRUMENTS
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430200* - Particle Accelerators- Beam Dynamics
Field Calculations
& Ion Optics