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Development and application of General Purpose Data Acquisition Shell (GPDAS) at advanced photon source

Description: An operating system shell GPDAS (General Purpose Data Acquisition Shell) on MS-DOS-based microcomputers has been developed to provide flexibility in data acquisition and device control for magnet measurements at the Advanced Photon Source. GPDAS is both a command interpreter and an integrated script-based programming environment. It also incorporates the MS-DOS shell to make use of the existing utility programs for file manipulation and data analysis. Features include: alias definition, virtual… more
Date: January 1, 1991
Creator: Chung, Youngjoo & Kim, Keeman.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Progress on the development of APS beam position monitoring system

Description: This paper describes the development status of the beam position monitoring system for the Advanced Photon Source (APS), a third-generation light source now under construction at Argonne National Laboratory. The accelerator complex will consist of an electron linac, a positron linac, a positron accumulator ring (PAR), an injector synchrotron and a storage ring. For beam position measurement, striplines will be used on the linacs, while button-type pickups will be used on the injector synchrotro… more
Date: January 1, 1991
Creator: Decker, G. & Chung, Youngjoo.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The APS linac beam position monitors and electronics

Description: Beam position monitors using stripline pickups for 30 ns long electron and positron beam bunches have been built and responses were measured in the vertical and horizontal directions. Log amplifiers used for signal processing have a dynamic range of 40 dB and are scaled for 50 mV/dB sensitivity. In this paper we describe the design of the detectors, the signal processing electronics, and the results of the position-to-signal mapping using a wire. Beam position measurements using a prototype det… more
Date: January 1, 1992
Creator: Fuja, R. & Chung, Youngjoo.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The APS linac beam position monitors and electronics

Description: Beam position monitors using stripline pickups for 30 ns long electron and positron beam bunches have been built and responses were measured in the vertical and horizontal directions. Log amplifiers used for signal processing have a dynamic range of 40 dB and are scaled for 50 mV/dB sensitivity. In this paper we describe the design of the detectors, the signal processing electronics, and the results of the position-to-signal mapping using a wire. Beam position measurements using a prototype det… more
Date: December 1, 1992
Creator: Fuja, R. & Chung, Youngjoo
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Test results of a monopulse beam position monitor for the Advanced Photon Source

Description: A prototype of the Monopulse Beam Position Monitor (BPM) was tested to determine the resolution capability for various signal levels and beam configurations. The BPM was tested in two environments: using a wire simulation of the beam in the laboratory and using real beam at various positions and levels at Stanford Synchrotron Radiation Laboratory. Both tests showed a resolution capability of better than 25 microns. This paper presents the procedures and measurements` results.
Date: December 1, 1992
Creator: Kahana, E. & Chung, Youngjoo
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Test results of a monopulse beam position monitor for the Advanced Photon Source

Description: A prototype of the Monopulse Beam Position Monitor (BPM) was tested to determine the resolution capability for various signal levels and beam configurations. The BPM was tested in two environments: using a wire simulation of the beam in the laboratory and using real beam at various positions and levels at Stanford Synchrotron Radiation Laboratory. Both tests showed a resolution capability of better than 25 microns. This paper presents the procedures and measurements' results.
Date: January 1, 1992
Creator: Kahana, E. & Chung, Youngjoo.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Hardware design and implementation of the closed-orbit feedback system at APS

Description: The Advanced Photon Source (APS) storage ring will utilize a closed-orbit feedback system in order to produce a more stable beam. The specified orbit measurement resolution is 25 microns for global feedback and 1 micron for local feedback. The system will sample at 4 kHz and provide a correction bandwidth of 100 Hz. At this bandwidth, standard rf BPMs will provide a resolution of 0.7 micron, while specialized miniature BPMs positioned on either side of the insertion devices for local feedback w… more
Date: October 1, 1996
Creator: Barr, D. & Chung, Youngjoo
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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