Setup for the testing New strip counter 400

Setup for the testing New strip counter (400 х1500 mm²) on cosmic rays (trigger counters Up and Down, 100 x 100 mm² ).

The scheme PMT 1 A PMT 3 1 2 3 B PMT 2 4 • 5 6 Setup for the testing New strip counter (400 х1500 mm²) on cosmic rays (trigger counters A and B, 100 x 100 mm² ); ## (1 -6) –the centers of trigger counters position.

Results WLS-fiber Attenuation Length ~ 4 m

Table. Relative light output of the strips for MIP №№ pads (1+4)/2 (2+5)/2 (3+6)/2 <Asig>up & down 284. 8 271. 11 266. 97 <Asig>(c orr) 280. 15 277. 58 263. 85 4. 37 4. 16 4. 10 <Nph el>

Dependence of the number N of photoelectrons on the distance between WLS fibers h for single scintillation plate.

Dependence of the number N of photoelectrons on the distance between WLS fibers h single scintillation plate.

Dependence of the number N of photoelectrons on the distance between WLS fibers h single scintillation plate.

Российские сцинтилляторы. Vitaliy Semenov, http: //indico. cern. ch/conference. Display. py? conf. Id=713 Scintillator variants for MAMUD. Photo readout Si. PM (~QE=0. 5 PMT QE) 1 x 1 mm**2 + WLS-fiber Y 11 DC, 1 mm Dia, 1 m length, w/o end reflector.

Comparison Light output of the scintillators different type (readout with out WLS-fibers)

Table. Mip signals for some PMT’s. PMT Mean Sigma Entries Nph el PMT - 85 № 29236 589. 3 195. 9 153117 9. 049071 65. 122705 PMT – 85 № 29157 570. 8 172. 4 151903 10. 96209 52. 070357 34. 71718 0. 8589108 PMT-115 М 40. 42 6. 86 147802 (Nph el/ Chanel)-1

Comparison QE of R 7899 and QE FEU-85 for BCF 92 DC Emission QE R 7899/QE FEU-85 arb. un PMT Type ## FEU-85 1 # LB 1788 2 1. 02 # LB 3568 3 0. 66 # LB 1743 4 1. 01 # LB 2139 5 0. 81 # LB 3648 6 0. 77 <Ham/FEU> 7 0. 85 Mean 0. 16 RMS 0. 19 RMS/Mean 1

Summary • qqq • eee