MULTI-PINHOLE CAMERA FOR BEAM POSITION AND VERTICAL ANGLE STABILIZATION

O.I. Meshkov¹, A.N. Zhuravlevª²

¹Novosibirsk State University, Novosibirsk, Russia

²Budker Institute of Nuclear Physics Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia

Abstract

The VEPP-4M electron-positron collider is now operating with the KEDR detector for the experiment at the energy area between 1100÷3000 MeV. In these experiments, monitoring of beam coordinates and angles at the interaction point is important for energy stabilization. BPM system of VEPP-4M doesn't provide the reliable information about beam orbit when machine operates as a collider. The diagnostics, described in this paper, is a good supplement for BPM data. The vertical coordinate and angle of the beam can be measured and stabilized at two points that are placed symmetrically relative to the beam interaction point. The precision of the measurements and the collider energy accessible for the diagnostics are discussed.

ª – corresponding author

Paper 

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