[Halld-pid] Hamamatsu timing resolution

[Paul Eugenio]

Hi Beni,

Nice work. Your results are consistent with our earlier comparative measurements taken with our old test set-up.  For comparison, I include two slides below from our Sep 09 update.


Paul

--
Prof. Paul Eugenio
Florida State University
Department of Physics
Tallahassee, Florida,  USA 32306

(850) 644-2585
eugenio at fsu.edu


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On Feb 9, 2011, at 7:59 AM, Beni Zihlmann wrote:

> Hi All,
> looking at the reference PMT more closely I realized that it is actually
> an XP2020 with a VD124/K/T base from the manufacturer and not an
> XP2262. The base is a specific design with an active circuit for the last
> 3 dynodes to improve high rate/current stability.
> I attached a file showing the results of both PMTs the Hamamatsu
> H10534 and the XP2020. Both give very similar results. So the limiting
> factor is my setup with the LED pulser.
> Knowing that the XP2020 is a very good/fast PMT and the Hamamatsu
> H10534 shows similar behavior I conclude at this point that the PMT
> is a reasonable choice for the TOF detector. I will however try to find
> a faster LED pulser to find the true limit of the PMT.
> 
> cheers,
> Beni
> <timingresolution_test.pdf>_______________________________________________
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