MA-PMT tests at Tsukuba

MA-PMT tests at Tsukuba (Pre-production tubes, H8711MOD)

Tapered base, isolation resistors, short pins, comes with a special interface PC board.

Data sheets

Test setup basically the same as for the R&D tubes, but the gap between the Y-11 fiber and the PMT surface is shorter.

Eight tubes tested. Two had been sent to ANL earlier this year.

One-page anode sensitivity summary table : rms of 128 channels = 13.8%. Was 10% for 10 R&D tubes.
Anode sensitivity at pixel centers (Tsukuba, spot illumination) :

KA2432 - KA2997 - KA3544 - KA3601

KA3630 - KA3635 - KA3724 - KA3909

Anode sensitivity comparison : Tsukuba (pixel centers) vs. Hamamatsu (full illumination)
scatter plot - ratio, rms etc.
Renormalized anode sensitivity for individual tubes

Overall anode sensitivity ("tube gain") comparison :
Hamamatsu (full illumination, sum of 16 channels) vs. Tsukuba (average of 16 pixel centers)
scatter plot

Tested R&D tunes (H6568) once again : Tsukuba (pixel centers) vs. Hamamatsu (full illumination)
scatter plot - ratio, rms etc.

Reproduced what we saw in CDF 6245.

Last modified: Sun Apr 16 17:56:57 JST 2006