1. Beam Test of BGO Crystal Yunlong Zhang 2009.12.8

2. CSR

3. RIBLL Test counter here

4. The configuration of beam elements and test counter beam Tof T2-Si BGO counter

5. In order to extend the dynamic range of readout, we use multi-readout from the dynodes. 10k 300k 300k Dy8 Dy9 Dy10 A 1R=300K, I=0.256mA at HV=1000V; 0.256W power dissipation Readout of PMT

6. Data collection A dy10 Dy9 dy8 Enengy signals Time signals A CFD GG A dy8 Peak ADC 22 Na gamma calibration: CAEN568LC Philip7164

7. The spectrum of 22 Na under -1100V.

9. 1000V Na22

10. 1100V Na22

11. Fit function:

12. proton kinetic enengies(MeV) (Bρ) D3 =(Bρ) D4 Tm expected (Bρ) D3 =(Bρ) D4 Tm experiment sets 100.4399 120.50430.5044 140.54500.5452 160.58290.5827 180.618580.6186 200.65240.6526 240.71540.7156 280.77350.7738 320.82780.8283 mixtue beam1.62321.6625 Beam particles selection Test with proton beam

13. A dy10 Dy9 dy8 Enengy signals Time signals A CFD GG A dy8 Peak ADC T2-SI ORT142 ORT450 CAEN568LC ORTlogic enengy signals to Peak ADC Philip744 Philip7164

14. Delta E vs E

15. Tp=14MeV

16. Without Si-∆E correction T2-Si 280μm 7μm-Al foil TOF 10μm

17. T2-Si 280μm 7μm-Al foil With T2-Si ∆E correction We have to understand why the ratio between the -odes is energy dependence? T2-Si 280μm 7μm-Al foil TOF 10μm

18. Fit function: L = a+b*x

19. Saturation of fluorescence?

20. Thanks