2014/02/26:

This is the first day we try to run the test in the new lab space. 
Mostly tried to reproduced the earlier result on the LHCb tile. Had
to change the PMT HV (increase by 200V), replaced a PMT, etc. But at
the end got nearly 22 ph.e. for MIP.

2014/02/27:

First try on the Chinese hexagon tile. For comparison:

LHCb(Russian) tile: 1.5cm thick, fiber embedded 3.5 turns (nearly 4 turns 
if also counting the straight portion); MIP response see 


single p.e. peak is around 26 for the russ tile
and around 27 for the chinese tile.  Based on the
russ tile peak at 541 we expect the chinese tile peak
at:

24/18*2.3/3.5*27/26*541=492 +/- 20 given the error on determining
the s.p.e. peak.  We measure 497 for the four hour run 1228.


Thickness of russ=18/32"
Thickness of chin=24/32"
No. turns of russ=3.5
No. turns of chin=2.3