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Re: Large area SiPMs from MEPhI (fwd)
On Tue, 26 Feb 2008, Curtis A. Meyer wrote:
Curtis,
things are a bit more complicated, we are currently having a sole source
agreement with Sensl and the argument is, there is nobody else on the
market who is able to do this. The latest contract is 200k$ just signed a
week ago, we get in big trouble if this is not true and the latest
developments indicate that there might be soon more providers. so we have
to investigate this seriously. And for me this means to test new things on
the market.
Actually the total investment in the SiPMTs is quite high and I
must admit I get also a bit doubts on the promised price by Sensl.
In addition I have a bit the feeling we fund quite a bit their development
for the arrays. Especially after what I saw on the german funding agency
meeting I have been last friday. we will see what sensl delivers in the
next six month and what the delays are on the contract.
elke
> Date: Tue, 26 Feb 2008 06:09:26 -0500
> From: Curtis A. Meyer <cmeyer@ernest.phys.cmu.edu>
> To: Elke-Caroline Aschenauer <elke@jlab.org>
> Cc: George Lolos <George.Lolos@uregina.ca>, elton@jlab.org, zorn@jlab.org,
> halld-cal@jlab.org
> Subject: Re: Large area SiPMs from MEPhI (fwd)
>
> Hi Everyone -
>
> while the historical performance of SciPMs may not be relevant today,
> I think that the question that Elton asked about the report that he got
> from Mahbub on results that were first presented in 2005. In that snese,
> I assume that we got the answer we wanted. Clearly when we get to
> the point of purchase, we will look at everything again, but knowing the
> history of this rapid deveolpement is not at all bad.
>
> Curtis
> On Tue February 26 2008, Elke-Caroline Aschenauer wrote:
> > On Mon, 25 Feb 2008, George Lolos wrote:
> >
> > Dear all,
> >
> > a discussion like that makes not to much sense it is based to much on hear
> > say and historical information. The developemnt is quite fast on this
> > market, so to judge things on a year old information is not a good
> > strategy.
> >
> > I suggest we investigate what is available and buy if the products are in
> > the suitable range for us, running at room temeperature and a chance for
> > getting bigger arrays in 2 years from now a couple of different SiPMTs and
> > compare them. Carl we can look into this after the fiber measurements are
> > complited.
> >
> > We discuss this in more detail on friday if I'm back.
> >
> > cheers elke
> >
> >
> > > Date: Mon, 25 Feb 2008 18:15:14 -0600
> > > From: George Lolos <George.Lolos@uregina.ca>
> > > To: elton@jlab.org, zorn@jlab.org
> > > Cc: halld-cal@jlab.org
> > > Subject: Re: Large area SiPMs from MEPhI (fwd)
> > >
> > > Hi Elton:
> > >
> > > Last year, there was a conference report on the 3mm x 3mm MEPHI SiPM and
> > > they showed single photoelectron resolution comparable with what Carl
> > > has shown at -20 C for the SensL. However, the MEPHI measurement was
> > > taken at -50 C, I have the file somewhere and I can dig it up if
> > > necessary. I don't know what is the performance of their latest version
> > > but I suspect it is based on the results shown in that presentation.
> > >
> > > With SensL announcing their 3mm x 3mm commercial SiPM's sold as a
> > > package with cooling and compact electronics, it was only a matter of
> > > time before other companies did the same. If history is any indication,
> > > the MEPHI detectors will be more noisy and with more variations than
> > > those of CPTA and/or Hamamatsu.
> > >
> > > Cheers,
> > >
> > > George
> > >
> > > >>> Elton Smith <elton@jlab.org> 02/25/08 2:59 PM >>>
> > >
> > > Hi George and Carl,
> > >
> > > Below is a reference to Buzhan et al, NIM A567 (2006)78-82 describing a
> > > 3x3mm2 SiPM from MEPhI. Do you know anything about this? Comments?
> > >
> > > Cheers, Elton.
> > >
> > > On Mon, 25 Feb 2008, Mahbub Khandaker wrote:
> > >
> > > > Dear Elton,
> > > > Attached is an article on large-area SiPM that Boris Dolgoshein
> > > > and his group at MEPhI has been developing. Most of the results
> > > > are from 3mm x 3mm units but they say that 10mm x 10mm units are
> > > > in development. These results were first presented at the 4th ICNDP,
> > > > Beaune-2005 conference in France.
> > > >
> > > > Best regards,
> > > > Mahbub
> > >
> > >
> > >
> >
> > ( `,_' )+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=
> > ) `\ -
> > / '. | +
> > | `, Elke-Caroline Aschenauer =
> > \,_ `-/ -
> > ,&&&&&V Jefferson Lab +
> > ,&&&&&&&&: HALL-D 12C / F381 121-A Atlantic Avenue =
> > ,&&&&&&&&&&; Suite 8 Hampton, VA 23664 -
> > | |&&&&&&&;\ 12000 Jefferson Ave +
> > | | :_) _ Newport News, VA 23606 Tel.: 001-757-224-1216 =
> > | | ;--' | Mail: elke@jlab.org Mobil: 001-757-256-5224 -
> > '--' `-.--. | +
> > \_ | |---' Tel.: 001-757-269-5352 =
> > `-._\__/ Fax.: 001-757-269-6331 -
> > +=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+
> >
>
>
>
> --
> Professor Curtis A. Meyer Department of Physics
> Phone: (412) 268-2745 Carnegie Mellon University
> Fax: (412) 681-0648 Pittsburgh PA 15213-3890
> cmeyer@ernest.phys.cmu.edu http://www.curtismeyer.com/
>
( `,_' )+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=
) `\ -
/ '. | +
| `, Elke-Caroline Aschenauer =
\,_ `-/ -
,&&&&&V Jefferson Lab +
,&&&&&&&&: HALL-D 12C / F381 121-A Atlantic Avenue =
,&&&&&&&&&&; Suite 8 Hampton, VA 23664 -
| |&&&&&&&;\ 12000 Jefferson Ave +
| | :_) _ Newport News, VA 23606 Tel.: 001-757-224-1216 =
| | ;--' | Mail: elke@jlab.org Mobil: 001-757-256-5224 -
'--' `-.--. | +
\_ | |---' Tel.: 001-757-269-5352 =
`-._\__/ Fax.: 001-757-269-6331 -
+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+