CDF The Collider Detector at Fermilab (CDF) is a general purpose detector system designed to explore the physics of 2 TeV protonantiproton collisions made possible by the Tevatron I Project. It consists of a central magnetic detector that covers the angular range 10 to 170 with respect to the incident proton direction and two forward/backward detectors that cover the ranges 2 to 10 and 170° to 178, respectively. The basic goals of the detector include: 1) the measurement of electromagnetic and hadronic energy flow in fine bins of rapidity and azimuthal angle over the entire angular range of CDF with uniform granularity using systems of shower counters and hadron calorimeters, 2) measurements of the directions of charged particles to angles as close to the incident beam directions as technically possible, 3) momentum analysis of charged particles over the angular range 15* to 165, and 4) identification and momentum analysis of muons over the angular ranges 2° to 20°, 40° to 140, and 160° to 178°. The major detector components are: 1. Central detector solenoid magnet with superconducting coil. 2. Charged particle tracking chamber for tracking system organized into a central analysis, a set of vertex time projection chambers to find event topologies, and forward tracking chambers for small angle measurements. 3. Electromagnetic shower counters covering the full angular acceptance of CDF for identifying photons and electrons. There are three subsystems of shower counters, Central, End Plug, and Forward. 4. Hadron calorimeters backing up the shower counters. In addition to the three regions covered by the shower counters, the end wall of the solenoid magnet is instrumented with hadron calorimeters. is 5. Muon detectors. The central muon system behind the central hadron calorimeters; the forward system includes magnetized iron toroids for momentum measurements. all of the 6. Front-end and Data Acquisition Electronics systems and Online Computers for recording data from and monitoring detector systems. 7. Beamline equipment including precision vertex detectors. luminosity monitors and D-Zero E-740 (Grannis) Study of Events in pp Collisions at 2 TeV The experiment will study the properties of 2 TeV pp collisions with particular emphasis on measurement and identification of leptons (electrons and muons), high transverse momentum jets, and missing energy. Z bosons enabling precision measurements of their masses, widths and production properties; study of high PT multijet and single photon production for testing QCD; and searches for new phenomena beyond the standard model such as new quark generations, heavy leptons, supersymmetric particles, technicolor particles, quark-gluon plasma or quark compositeness. The proprosed detector incorporates three main systems: a central detector, uranium-liquid argon calorimetry over nearly 4 solid angle, and a magnetized iron muon spectrometer. The central detector comprises a multicell transition radiation detector for electron identification, and outerdrift chamber chambers in three sections covering down to 5° with respect to the beams and a vertex detector. There is no central magnetic field. The calorimetry is divided into five angular regions and has a projective tower geometry with 50,000 readout channels. Multiple depth segmentation of the combined EM and hadronic calorimeter is made for enhanced identification of electrons. Energy resolution for hadrons is expected to be 40%/VE with excellent calibration control. The muon system will measure muon monenta to within about 20% up to several hundred GeV/c for angles above 8° with respect to the beams. Thre iron toroids provide the field with position and angle measurements given by three concentric sets of proportional drift tubes. |