With support from INTAS, the Institute of Nuclear Physics at Moscow State University has been very active in the HES Project and the ZEUS experiment at HERA. INP-MSU has been able to make a significant contribution to the design, construction, and operation of the HES detector and to the physics analyses available using HES within the ZEUS experiment at HERA.
More than 50% of the FHES detector, consisting of 10128 silicon diode detectors in a planar array covering approximately 10m² was operated in 1996. The balance of the components were produced during 1996 in preparation for installation during the 1996-97 winter shutdown. This improvement together with operating the existing RHES detector will enhance the physics scope obtainable at ZEUS and further the understanding of fundamental interactions.
INP-MSU has contributed the central components for the new FHES detector; namely: the silicon diodes mounted on ceramic cards with pre-amplifiers and the long multi-layer boards used to transmit the signals from the diodes to the readout electronics. In addition to this contribution, physicists and engineers from INP-MSU have played an active role in designing the electronics for FHES in collaboration with the international HES group. Personnel from INP-MSU have also participated in the operation, maintenance and physics analysis with the operational RHES detector.