Beam-profile monitor was using a sodium-vapour curtain at 45 degrees to the ISR beam. Electrons produced by ionization of the sodium vapour given an image of the beam on a fluorescent screen that was observed by a TV camera.
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Details
Title: Beam-profile monitor in ISR, Ring I
Creator: CERN PhotoLab
Date Created: 1972-09, 1972
Contributor: GenevaCERN1972-9
Medium: Film, Photographic negative
Link to Internal Document: http://cds.cern.ch/record/1479851
Internal Reference: Rubrique: Date Planche:9 72 De:192 A:195