The scintillating fiber hodoscope S2 for the first CREAM flight was built in Pisa/Siena and integrated in between the upper and lower target sections (T1 and T2) of the CREAM-1 instrument in July 2002. It consists of 2 orthogonal planes with a total of about 600 scintillating fibers with square cross section (2 x 2 cm²). The active area is about 64 x 64 cm². The double-cladding scintillating fibers are covered by white EMA coating and are glued head-on with clear square fibers of the same cross section. Alternate clear fibers are routed, on opposite ends to proximity-focus Hybrid Photo Diodes (73 pixels) . The hodoscope read-out is performed by 12 HPDs.

S2 flight model (2002) :

• Construction

• CERN Heavy Ions Beam Test (Nov 2003)

• Paper : proceedings of the 2nd International Conference on Particle and Fundamental Physics in Space - Washington DC 10-12 Dec 03 (in press)