Difference between revisions of "FD DAQ Multiplicity"

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There are 75 racks per 10kt.
 
There are 75 racks per 10kt.
 
== Questions ==
 
 
* How many switches per rack?  Giles draws 1 each for RCE and SSP.
 
* Related: how many NICs per BRC? 
 
* What is the speed of the switch connecting the 75 BRCs and the 10 trigger farm and 2 data farm boxes (Giles figure)?
 
* What is the unit of "farm".
 
  
 
= Refs =
 
= Refs =

Revision as of 17:11, 30 November 2017

Electronics

Cold electronics input to DAQ (LArTPC)

  • 16 ch input to analog ASIC (FE + ADC), 8:1 digital MUX, 2 channel digital output
  • 8 ASIC / analog mother board
  • 8 analog mother boards / FEMB assembly
  • 128 analog channels / FEMB assembly
  • 1 digital ASIC, 16 channel input, 4:1 MUX, 4 channel output (each 1Gbps)
  • 2Mhz at 12 bits is 24 Mbps
  • 16ch*24Mbps*8MUX = 3072Mbps into digital ASIC, (up to 4Gbps out on 4 links)
  • 20 FEMB assembly / APA
  • 150 APA / 10kt
  • 128:4 total channel MUX


DAQ

1 DAQ Rack holding/servicing

  • 1 cryo flange
  • 2 APA
  • 2 COB (16 RCE)
  • 1 BRC (Board reader computer)
  • 2 internal switches (one for RCE, one for SSP) 10Gbps?

2 APA can make 6144 Mbps

There are 75 racks per 10kt.

Refs