Beam-Based Calibration System of BPM Offset on BEPC

HU Chun-Liang

Chinese Physics C> 2004, Vol. 28> Issue(2) : 200-204

Beam-Based Calibration System of BPM Offset on BEPC

HU Chun-Liang ^,

the Institute of High Energy Physics,CAS,Beijing 100039,China

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Abstract：
The ever-increasing demand for better performance from circular accelerators requires improved methods to calibrate. beam position monitors(BPM). A beam based calibration system has been established to locate the centers of the BPM with respect to the magnetic center of quadrupole magnets.;Additional windings are applied to the quadrupole magnets to make the quadrupole magnetic strength individually adjustable and the number of the power supply of all 32 additional windings is only one. Software system has been finished to automatically measure the offsets of BPMs.;The effect of the beam-based calibration system shows that the calibration of BPM has been more quickly and accuretely.

References

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.Rojsel P.Nucl.Inst r and Meth.in Phys.Res.,1994,A(343):374-3822.Corbett W J,Hettel R O,NuhnH..D.Quadrupole Shunt Experiments atSpear,SLAC..PUB..7162,May 1,19963.Rice D et al.IEEE Transit ions on Nuclear Sciece 1983,NS30(4):21904.Schmidt R.Misal ignments from K..modulat ion,Proceedings of the ThirdWorkshop on LEP performance,CERN SL..93-19(DI),1993,139

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HU Chun-Liang. Beam-Based Calibration System of BPM Offset on BEPC[J]. Chinese Physics C, 2004, 28(2): 200-204.

HU Chun-Liang. Beam-Based Calibration System of BPM Offset on BEPC[J]. Chinese Physics C, 2004, 28(2): 200-204. shu

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Received: 2003-04-18
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Beam-Based Calibration System of BPM Offset on BEPC

HU Chun-Liang ^,

Corresponding author: HU Chun-Liang,

the Institute of High Energy Physics,CAS,Beijing 100039,China

Received Date: 2003-04-18
Accepted Date: 1900-01-01
Available Online: 2004-02-05

Abstract: The ever-increasing demand for better performance from circular accelerators requires improved methods to calibrate. beam position monitors(BPM). A beam based calibration system has been established to locate the centers of the BPM with respect to the magnetic center of quadrupole magnets.;Additional windings are applied to the quadrupole magnets to make the quadrupole magnetic strength individually adjustable and the number of the power supply of all 32 additional windings is only one. Software system has been finished to automatically measure the offsets of BPMs.;The effect of the beam-based calibration system shows that the calibration of BPM has been more quickly and accuretely.