Abstract
The Compressed Baryonic Matter experiment at thefuture Facility for Antiproton and Ion Research will use a time-of-flight(TOF) wall for hadron identification, which is at the moment planned to bebased on the Multi-gap Resistive Plate Chamber (MRPC) technology. The wallwill be placed at 10m distance from the target, covering an area of theorder of 150 m2. Over such an area, it will provide a time-of-flightresolution of 80 ps, by resorting to ca. 50000 RPC cells (in multi-strip ormulti-pad configuration). Fluxes of quasi-minimum ionizing particles(γβ⩾3) as high as 20 kHz/cm2 can be reachedin the central region, corresponding to the low polar angle/high rapiditysection. We propose here a realistic design for building the TOF wall byresorting to a single technology based on low-resistivity doped glass andrelying on small structural modifications of the modules developed andtested during the last two years. Latest results from the modules aresummarized. A comprehensive analytic discussion on the counter performanceunder non-uniform beams, when neglecting non-local effects, is alsopresented.
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