Abstract
The HERMES Collaboration will install a new recoil detector for the last two years of HERA-II running. This detector surrounds the internal gas target and will enable H ERMES to study hard exclusive processes which provide access to generalised parton distributions (GPDs). Its main purpose will be positive identification of recoiling protons, improving the transverse momentum reconstruction of these particles and rejecting non-exclusive background events. Direct measurements of energy deposition and track direction will provide particle identification and momentum determination. First results of a cosmics test are presented.
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