HCAL HO Calorimeter

1

• HCAL HO Calorimeter -
• RPC Trigger
• Integration Proposal
• Hardware Plans
• E. Hazen, J. Rohlf, C. Posch
• Boston University
• in collaboration with Maryland, Fermilab,
• Princeton, CERN...

2
RPC Trigger Data Links
to Level-1 trigger
SPLITTER
LINK BOARD
90 m _at_ 1.6Gbit/s
S-link to DAQ
up to 5 m LVDS _at_ 80MHz
2-15 m unsynchronised LVDS data from the
detector, I2C signals and test pulses to the
detector
3
HCAL (HO) in RPC Trigger
HCAL Front-end
QIE
New 'Optical SLB' (proposed) Transmitter
mezzanine board
GOL
to Level-1 trigger
QIE
QIE
HTR (Readout) Board
Optical Tx
SPLITTER
Optical Tx
90 m _at_ 1.6Gbit/s
S-link to DAQ
up to 5 m LVDS _at_ 80MHz
4
HCAL Trigger Readout BoardTrigger Data Path
Non-linear QIE (ADC) input
ET104
ET114
ET110
ETcomp70
TP80
n11
7
ET70
ET60
RANGE SELECTOR
Linearized
4 GeV
Muon bit
E40
1
1 GeV
5
HCAL Trigger Path (updated)
L1 Filter
ETcomp
TP
ET90
QIE-data
10
10
7
10
1
1
Muon bit
1
1
6
HTR Configuration for HO
Total of 48 calorimeter channels per HTR
SLB
SLB
FPGA
P1
SLB
Two (identical) outputs per half HTR
SLB
SLB
P2
SLB
DAQ out
FPGA
Front-end data inputs
8
8
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Proposed Serializer

• Xilinx 'Rocket I/O'
• Multi-gigabit serializer and encoder
• 4 channels (TxRx) integrated in smallest Virtex
  2 Pro FPGA(XC2VP2 _at_ US118)
• Compatible with GOL protocol

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Candidate Optical Components(as used in HCAL
Front-end link)
Transmitter Honeywell HFT219x-541 LC
Connectorized VCSEL http//www.honeywell.com/VCSEL
Receiver Stratos Lightwave M2R-25-9-1-TL http//w
ww.stratoslightwave.com
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VME Prototype
Optical SLB Transmitter with companion VME test
board
"Infiniband" Connectors (Amp/Tyco HSSDC2)
Optical Tx/Rx
"SLB" Transmitter
3.125 Gbps
?
100 diff pairs
SLB
Test Site
Local bus
VME Interface
VMEbus
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Status and Plans

• Now working out details with RPC group...
• Development plan
• Finalize the selection of optical components
• Design a synchronization scheme
• Jose-Carlos' ECAL/HCAL synchronization scheme may
  be adapted...
• Prototype and test the optical link using Rocket
  I/O
• Test our SLB with the RPC fanout (receiver) card
  when it exists