Cerenkov Ring Imaging Detector Development for SLD

Progress in the development of a time projection style photoelectron detector is reported. The development is intended to demonstrate the principles and determine specifications for a practical design of the large CRID device recently described in the SLD design report, wherein a large detector for the Stanford Linear Collider is described. The drift detector utilizes the technique of photo-ionization of Cerenkov light in tetrakis-dimethylamino-ethylene (TMAE) vapor at (1700-2200 Ã…), and drifting the photoelectrons ten´s of centimeters to a proportional chamber picket fence, where the drift time provides one coordinate and the wire number the other coordinate. Results are reported on the drifting of photoelectrons from the Cerenkov light and a light pulser over distances of 10 to 60 centimeters.