sPHENIX HCal discussion

[Edward Kistenev <kistenev AT bnl.gov>]

John, wherever this proposal came from and whoever made it I would support it 
wholeheartedly. My experience with CAEN - never works like in the manual but 
only because at first one does not know how to read that manual. It is 
certainly a slow and low range resolution (12 bits) but other than that - it 
is tuned to what we call High Gain in our test beam implementation so should 
be more then OK for tile testing. It regulates bias in the range 20-90V (can 
use it for many purposes) but probably does not have an individual channel 
controlled trip current (or maybe yes) and it is unclear the total current it 
may deliver (but we will learn). Etc.
One more thing which looks a bit of overkill - regulating both bias and 
amplifier gain (missing infor if this controllable gain is valid to both 
shaping amplifier or trigger only). 

Unfortunately the only info you may find on the web is short flier. So I dug 
further (not too deep) just to discover that in our test setup at UNIPLAST we 
are already using something what is probably some kind of early development 
prototype of a same board (or of a same idea) produced by Igor Kreslo who is 
submitting author on arXiv:1606.02290v1 [physics.ins-det]. I am asking Igor 
to tell if we can get something of a kind on loan.

Nice reading
                                Edward


On Apr 6, 2017, at 10:18 AM, John Haggerty <haggerty AT bnl.gov> wrote:

Good question, can't tell.  It turns out we may have one at the lab over in 
Instrumentation, I'm checking.

John Haggerty
email: haggerty AT bnl.gov
cell: 631 741 3358

On Apr 6, 2017, at 9:51 AM, Megan Connors <meganEconnors AT gmail.com> wrote:

> Hi John,
> 
> This looks really nice but I had Sawaiz take a quick look and from our 
> conversation yesterday it sounded like he thought only one channel can be 
> read out at a time. I didn't look closely enough myself yet but have you? 
> Can we record info from all channels simultaneously? 
> 
> Best, 
> -Megan 
> 
> On Thu, Apr 6, 2017 at 9:40 AM, John Haggerty <haggerty AT bnl.gov> wrote:
> Megan and John,
> 
> I have a tendency to gloss over the details until I'm holding the hardware 
> in my hands, but looking through the stuff on the web, this thing looks 
> like pretty much what we were talking about designing.  As far as I can 
> see, making it into a portable instrument would consist of messing around 
> with some connectors, and setting up an rpi that could run some software to 
> collect data.
> 
> The price is low enough so that I could credit card up one of these, and I 
> think I could loan it to whoever has time to work on it.
> 
> -------- Forwarded Message --------
> Subject: Re: CAEN Electronic Instr. - Request a quote for DT5702
> Date: Thu, 6 Apr 2017 10:04:19 +0200
> From: Marco Locatelli <marco AT caentechnologies.com>
> To: haggerty AT bnl.gov
> CC: Caen Tech Sales <sales AT caentechnologies.com>
> 
> Hello John,
> 
> here is Marco, I hope this email finds you well and I thank you for your 
> request. Attached you find a quote for a DT5702 as requested, with current 
> available discounts and expected delivery time. If you need any additional 
> information about the unit please let me know and I will be ready to assist 
> you. :-)
> 
> I remain at your disposal for any further information you may require.
> 
> Best Regards
> Marco.
> 
> 
> 
> Il 05/04/2017 21:00, haggerty AT bnl.gov ha scritto:
> Request a quote for DT5702
> 
> Date: 05/04/2017
> Comment:
> 
> Ordering options:
> WDT5702XAAAA DT5702 - 32 Channel SiPM readout Front-End Board BOXED
> 
> 
> Sender
> --------------------------------
> Name: John Haggerty
> Company: Brookhaven National Laboratory
> Phone/Fax: 6313442286/
> Address: Building 510C
> City: Upton
> Zip Code: 11973
> State: NY
> Country: US
> Email: haggerty AT bnl.gov
> --------------------------------
> 
> 
> 
> -- 
> Marco Locatelli
> Field Application Scientist
> CAEN Technologies, Inc.
> 1140 Bay Street - Suite 2C
> Staten Island, NY 10305
> Phone: +1 (718) 981-0401
> Mobile: +1 (718) 501-5309
> Fax: +1 (718) 556-9185
> www.caentechnologies.com
> 
> 
> 
> 
> 
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> -- 
> John Haggerty
> email: haggerty AT bnl.gov
> cell: 631 741 3358
>