Development of high-stability magnet power supply

A very stable (≤10ppm) magnet power supply (MPS) is required in an accelerator to achieve acceptable beam dynamics. Many factors affect the stability of an MPS, so design of the MPS requires much attention to noise-reduction schemes and to good processing of the signals from the feedback stage. This...

Full description

Saved in:
Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2016-06, Vol.822, p.15-24
Main Authors: Choi, W.S., Kim, M.J., Jeong, I.W., Kim, D.E., Park, H.C., Park, K.H.
Format: Article
Language:English
Subjects:
Accelerators
Beams (radiation)
Detectors
Devices
Magnet power supply
Meters
MPS
Oversampling ADC
Power supplies
Ripples
Stability
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A very stable (≤10ppm) magnet power supply (MPS) is required in an accelerator to achieve acceptable beam dynamics. Many factors affect the stability of an MPS, so design of the MPS requires much attention to noise-reduction schemes and to good processing of the signals from the feedback stage. This paper describes some design considerations for an MPS installed and operated in the Pohang Accelerator Laboratory: (1) control method, (2) oversampling technology, (3) ground isolation between hardware modules and (4) low-pass filter design to reduce the switching noise and rectifier ripple components, and shows the stability of three designed devices. The MPS design considerations were verified and validated in simulations and experiments. This paper also shows the relationship between stability and measurement aperture time of digital voltage meter 3458A to measure stability of a current.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2016.03.078