PHOBOS TOF @AGS TEST BEAM '97

Phobos TOF prototypes were set up in AGS test beam to measure their response for particle types in the range of momenta expected at RHIC. The setup consisted of two TOF subarrays (each containing four scintillator segments) crossed at right angles and a start detector. Time and energy were recorded for each channel.

A bull's eye view of the TOF prototypes (looking downstream). The setup for the Phobos silicon detectors sat directly behind the TOF slats.

The start detector positioned 1.7 m upstream from the TOF slats defined the beam spot. This distance of 1.7 m corresponds to the shortest path length proposed for the Phobos TOF at RHIC.

The crew from University of Rochester that worked in AGS test beam '97. Clockwise from lower left are: Ray Teng, Adam Hayes, Erik Johnson, and Robert Pak.

The U of R crew across the fence with the Phobos TOF electronics and DAQ. Clockwise from lower left are: Erik Johnson, Ray Teng, Robert Pak, and Adam Hayes.