Re: Estimates for Sipm cooling below room temperature

[Elton Smith <elton@jlab.org>]

Hi Serguei,

Thanks for the references. In particular the reference to
http://arxiv.org/abs/0807.3220 has a lot of nice data on the 1x1 mm2 SensL
devices. They also show data at fixed over-voltage which shows that the
PDE does not have any intrinsic temperature dependence at fixed
over-voltage. I have added extrapolations based on their measurements to
my paper. It is nice to see that there is good consistency between this
paper and Richard's measurements of the Photonique sensors, so likely
conclusions based on these results can be trusted.

GlueX-doc-1214 has been updated with the new information.

As far ast the Zecotek MAPd-3 device, I am not convinced they satisfy our
requirements, because it is not clear that they are quoting the PDE and
dark rate at the same operating voltage. We need more details to make a
adequate assessment.

Thanks, Elton.

Elton Smith
Jefferson Lab MS 12H5
12000 Jefferson Ave
Suite # 16
Newport News, VA 23606
elton@jlab.org
(757) 269-7625
(757) 269-6331 fax

On Sun, 15 Feb 2009 serguei@jlab.org wrote:

>         Dear Elton,
> I checked reports of the performance of CPTA, HAMAMATSU and SensL SiPMs and
> and can not find any evidence of a strong temperature dependence of the
> PDE. Here is Sensl_T.pdf in the attachment. In this report you can find
> all data for the estimation. Any way your conclusion about working
> temperature is wright.
> Look on second file in the attachment. You can find slide 2 with hamamatsu
> SiPM pulse shape at different temperatures. This slide illustrated
> changing (increasing) quenching silicone resistor value with a drop in
> temperature (this is the answer for "What is this spike??" question).
>
> Sergey.
>
> >
> > Dear cal group,
> >
> > I have posted GlueX-doc-1214 on estimating the performance gains for SiPMs
> > when they are cooled. I can go over the note briefly at our meeting this
> > morning.
> >
> > Cheers, Elton.
> >
> > Elton Smith
> > Jefferson Lab MS 12H5
> > 12000 Jefferson Ave
> > Suite # 16
> > Newport News, VA 23606
> > elton@jlab.org
> > (757) 269-7625
> > (757) 269-6331 fax
> >
>