The temperature dependence of BGO coupled with photomultiplier tube R5610A-01 was studied in the range of -30{deg}C~30{deg}C. The temperature coefficient of the BGO and R5610A in whole was tested to be -1.82%. And the temperature coefficient of the g
ain of the R5610A is -0.44% which was tested in the same situation using a blue LED. Thus the temperature coefficient of BGOs light yield can be evaluated as -1.38%.
The magnetic characteristics of photomultiplier tube R5610A-01 are studied in this paper. The experimental data shows that the gain of R5610A-01 loses about 53% when the magnetic field is 3G along its +X axis. A cylinder of one-layer permalloy strip
is able to reduce the effect of 3G magnetic field on the PMTs gain to less than 1%.
