Difference between revisions of "FD DAQ Multiplicity"

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* 2 APA
 
* 2 APA
 
* 2 COB (16 RCE)
 
* 2 COB (16 RCE)
* 1 BRC (Board reader computer) 3 NICs (RCE network, SSP network, detector network)
+
* 1 BRC (Board reader computer)
 
* 2 internal switches (one for RCE, one for SSP) 10Gbps?
 
* 2 internal switches (one for RCE, one for SSP) 10Gbps?
  
 
2 APA can make 6144 Mbps
 
2 APA can make 6144 Mbps
 +
 +
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 23:08, 4 January 2016

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.

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