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Title: HIGH RESOLUTION ANALOG / DIGITAL POWER SUPPLY CONTROLLER

Abstract

Corrector magnets for the SPEAR-3 synchrotron radiation source require precision, high-speed control for use with beam-based orbit feedback. A new Controller Analog/Digital Interface card (CANDI) has been developed for these purposes. The CANDI has a 24-bit DAC for current control and three 24-bit {Delta}-{Sigma} ADCs to monitor current and voltages. The ADCs can be read and the DAC updated at the 4 kHz rate needed for feedback control. A precision 16-bit DAC provides on-board calibration. Programmable multiplexers control internal signal routing for calibration, testing, and measurement. Feedback can be closed internally on current setpoint, externally on supply current, or beam position. Prototype and production tests are reported in this paper. Noise is better than 17 effective bits in a 10 mHz to 2 kHz bandwidth. Linearity and temperature stability are excellent.

Authors:
Publication Date:
Research Org.:
Stanford Linear Accelerator Center, Menlo Park, CA (US)
Sponsoring Org.:
USDOE Office of Science (US)
OSTI Identifier:
813102
Report Number(s):
SLAC-PUB-9806
TRN: US0303683
DOE Contract Number:  
AC03-76SF00515
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 21 May 2003
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ACCURACY; AVAILABILITY; BEAM POSITION; CALIBRATION; FEEDBACK; MAGNETS; MONITORS; MULTIPLEXERS; PRODUCTION; RESOLUTION; ROUTING; STABILITY; SYNCHROTRON RADIATION SOURCES; TESTING

Citation Formats

Medvedko, Evgeny A. HIGH RESOLUTION ANALOG / DIGITAL POWER SUPPLY CONTROLLER. United States: N. p., 2003. Web. doi:10.2172/813102.
Medvedko, Evgeny A. HIGH RESOLUTION ANALOG / DIGITAL POWER SUPPLY CONTROLLER. United States. doi:10.2172/813102.
Medvedko, Evgeny A. Wed . "HIGH RESOLUTION ANALOG / DIGITAL POWER SUPPLY CONTROLLER". United States. doi:10.2172/813102. https://www.osti.gov/servlets/purl/813102.
@article{osti_813102,
title = {HIGH RESOLUTION ANALOG / DIGITAL POWER SUPPLY CONTROLLER},
author = {Medvedko, Evgeny A},
abstractNote = {Corrector magnets for the SPEAR-3 synchrotron radiation source require precision, high-speed control for use with beam-based orbit feedback. A new Controller Analog/Digital Interface card (CANDI) has been developed for these purposes. The CANDI has a 24-bit DAC for current control and three 24-bit {Delta}-{Sigma} ADCs to monitor current and voltages. The ADCs can be read and the DAC updated at the 4 kHz rate needed for feedback control. A precision 16-bit DAC provides on-board calibration. Programmable multiplexers control internal signal routing for calibration, testing, and measurement. Feedback can be closed internally on current setpoint, externally on supply current, or beam position. Prototype and production tests are reported in this paper. Noise is better than 17 effective bits in a 10 mHz to 2 kHz bandwidth. Linearity and temperature stability are excellent.},
doi = {10.2172/813102},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {5}
}

Technical Report:

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