Abstract
We have measured the timing properties on two new 2-inch micro-channel plate photomultiplier tubes from Photonis; one tube with 25 micron pores and the other tube having 10 micron pores. The 10 micron pore tube uses a novel charge- collection scheme at the anode to provide equal arrival time of the signal independent of the hit position of incident light on the face of the tube. We have performed these measurements using a Hamamatsu PLP-10 picosecond laser and a commercial Camac readout electronics system. We present these results, and compare timing properties to a standard Burle/Photonis 85011 micro-channel plate photomultiplier tube having 25 micron pores. We set an upper limit on the resolution of 9.1psec with Npe approximately 50.
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