4. pi. detectors

The 4..pi.. Detector Working Group tried to address two major questions: (1) can general 4..pi.. detectors be built for the SSC that will be able to study rare processes at center-of-mass energies of 40 TeV and at luminosities of 10/sup 33/ cm/sup -2/sec/sup -1/; and (2) what are realistic cost estimates for such detectors. To try to answer these questions, the group split into three subgroups, each of which worked fairly independently to design a detector. Gary Feldman led the subgroup that designed a nonmagnetic detector called D1; Gil Gilchriese led the subgroup that designed a magnetic detector called SCD, which employs conventional technology; and Jasper Kirkby led the subgroup that designed a magnetic detector called SciFiD, which has a non-conventional tracking system. The general conclusions of these studies were that these types of detectors could be built, would be able to do physics under these conditions, and would each cost between 200 and 300 million dollars.