Tau/charm Workshop summary

The original proposal for a Tau/Charm Factory has been followed by a series of workshops to develop design for the machine and detector and clarify the physics objectives. The machine has been visualized as an electron‐positron collider with C.M. energy approximately 3 to 6 GeV/C2. The design has two rings of magnets carrying the electron and positron beams of equal energies. A high luminosity requirement, 1033/cm2/s at 4 GeV/C2 in the C.M. leads to currents ofaround an ampere. This permits probing the physics of the θ lepton startingfrom the threshold for its pair production and of the charm quark through the regions of narrow charm‐anticharm resonances and of production of pairs of charmed mesons and baryons. A detector with calorimetry, tracking, and particle identification capabilities that are optimized to the physics is an essential part of this concept.(AIP)1996 American Institute of Physics