sPHENIX discussion of electronics

[Sukhanov <sukhanov AT bnl.gov>]

Hi Sarah,
> 60 kHz 64-channel 14-bit waveform digitizers
 Aren't they 60 MSPS or MS/s?

Also the Gpbs should be corrected to Gbps or Gbit/s.

Regards, Andrei.

On 2016-09-28 01:43, Sarah Campbell wrote:
> Hi all-
>
> Below is a draft of my abstract for QM.  Suggestions welcome!
>
> -Sarah
>
> Title: sPHENIX Calorimeter Waveform Digitizers
>
> Abstract:
>  sPHENIX is the future state-of-the-art detector at Brookhaven
> National Laboratory's Relativistic Heavy Ion Collider.  It consists
> of large-  acceptance electromagnetic and hadronic calorimeters,
> precision tracking and a 1.5T superconducting magnet.  sPHENIX will
> study the quark gluon plasma over a range of length scales by
> measuring rare heavy-flavor and jet phenomena with high statistics. 
> To realize this goal, sPHENIX must read out over 27,000 calorimeter
> channels with a high-speed data acquisition rate of 15 kHz.  This is
> achieved by using 60 kHz 64-channel 14-bit waveform digitizers to
> continuously convert analog responses into digital signals over a
> large dynamic range.  A common direct digitization is used for both
> the hadronic and electromagnetic calorimeters.  Multiple samples
> (~10-14) are obtained for each channel in each event with an event
> sampling rate six times the beam crossing frequency.   The digitizer
> generates near-offline quality 2x2 patch summed 8-bit Level 1 trigger
> primitives for every beam crossing and transfers them via 2.4 Gpbs
> optical link to the data acquisition system.   The noise
> characteristics and status of the digitizer development,  including
> their role in the January 2017 prototype tests at Fermilab's Test Beam
> Facility, will be presented. 
>
> --
>  Sarah Campbell
>  Columbia University
>
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