Author/Authors :
Denisov، نويسنده , , S. and Dickey، نويسنده , , J. and Dzierba، نويسنده , , A. and Gohn، نويسنده , , W. and Heinz، نويسنده , , R. A. Howell، نويسنده , , D. and Mikels، نويسنده , , M. and Oneill، نويسنده , , D. and Samoylenko، نويسنده , , V. and Scott، نويسنده , , E. and Smith، نويسنده , , P. and Teige، نويسنده , , S.، نويسنده ,
Abstract :
Phototubes associated with a Cherenkov counter, with a wall of scintillation counters for time-of-flight measurements and with a wall of lead glass blocks of an electro-magnetic calorimeter will operate in the fringe field of a superconducting solenoid in the GlueX experiment. The solenoid will be operated with a central magnetic field of ≈ 2.5 T . The maximum fringe field in the vicinity of the phototubes will be approximately 150 G . Various techniques for magnetic shielding of phototubes were studied using a 1-m diameter Helmholtz coil arrangement operated with a maximum central field of 200 G . Results are presented.