Design of the AGS Booster ionization profile monitor

The Alternating Gradient Synchrotron (AGS) booster ionization profile monitor (IPM) must operate in a vacuum of about 3*10/sup -/0/sup 11/ Torr. The authors present details of the design of the profile monitor. The ultra-high vacuum imposes certain requirements on detector gain and restrictions on c...

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Bibliographic Details
Main Authors: Stillman, A.N., Thern, R.E., Witkover, R.L., Van Zwienen, W.H.
Format: Conference Proceeding
Language:English
Subjects:
Anodes
Detectors
Electrodes
Electrons
Ionization
Microchannel
Monitoring
Structural beams
Vacuum technology
Wires
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Summary:The Alternating Gradient Synchrotron (AGS) booster ionization profile monitor (IPM) must operate in a vacuum of about 3*10/sup -/0/sup 11/ Torr. The authors present details of the design of the profile monitor. The ultra-high vacuum imposes certain requirements on detector gain and restrictions on construction techniques. Each detector is a two-stage microchannel plate with an integral substrate containing sixty-four printed anodes. Formed electrodes provide uniform collection fields without the use of resistors, which would be unacceptable in these vacuum conditions. An ultraviolet light calibrates the detector in its permanent mounting. An extra set of electrodes performs a first order correction to the perturbations imposed by the horizontal and vertical collection electrodes.< >
DOI:10.1109/PAC.1991.164576