Abstract

We constructed a luminosity monitor of the lead-scintillator sandwich type for the VENUS detector at the e +e − collider TRISTAN. Photomultiplier tubes with transmissive mesh dynodes could be operated fairly well in a high magnetic field and hence the readout optics system was considerably simplified. We present the performance of the luminosity monitor for e +e − collisions at √ s = 50 and 52 GeV.

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