Studies of relative gain and timing response of fine-mesh   photomultiplier tubes in high magnetic fields
  We investigated the use of Hamamatsu fine-mesh photomultiplier tube assemblies H6152-70 and H6614-70 with regards to their gain and timing resolution in magnetic fields up to 1.9 T. Our results show that the H6614-70 assembly can operate reliably in magnetic fields exceeding 1.5 T, while preserving a reasonable timing resolution even with a gain reduction of a factor of approximately 100. The reduction of the relative gain of the H6152-70 is similar to the H6614-70's near 1.5 T, but its timing resolution worsens considerably at this high field. 
V. Sulkosky, L. Allison, C. Barber, T. Cao, Y. Ilieva, K. Jin, G.   Kalicy, K. Park, N. Ton and X. Zheng
physics.ins-det nucl-ex