larg. week, april 2002, electronics meeting1 progress report on electronics activities in paris...
TRANSCRIPT
Larg. Week, April 2002, Electronics Meeting 1
Progress Report On Electronics Activities in
Paris
Bertrand LaforgeLPNHE Paris
CNRS/IN2P3 – Universités Paris 6&7
• SPAC system status• Controller Board Development Status• Prospects
• SPAC system status• Controller Board Development Status• Prospects
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SPAC System Status
Spac Slaves :
• 5 SPAC3 ASICs received and tested : OK !•~100 SPAC3 ASICs will arrive in Paris this week
should be available for FE boards quite quickly
•Irradiation Test in preparation (test by early june ):
•4 ASICs (3 receivers, 1 repeater) will be fully tested•1 monitoring VME board has been developed for the test•6 ASICs will be put on another card•Test Bench developed in C, C++ is fully functional
implementation of a GUI is ongoing
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SPAC System StatusImplementation of Spac Bus under study :
Simulation using SpecctraQuest underway…
Spac Bus Optical LinkMockup built in Paris : radhard solution found and
tested.- Emitter : FEB optical link ok ! - Receiver : Rad-hard Cern RX40 + Fermionics Pin diode ok ! Packaging RX40 + pin diode to be studied for assembly on
controller
e.g. Barrel FEC bus :
Question : Can we drive 22 SPACs as needed on the EMEC Special ½ crate ? Can it be tested at BNL ?
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Test Set up at LPNHE
CERN RX4010H116 TTC tree
SPAC3 Test Boards
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Controller Board Design Status
• TTC connectors : – USB mini-B/mini-B : ok !– Halogen free cables will have to be produced
(Molex)
• Rad-tol TTC fan-out : – Fan out based on a tree of 10H116 chips had been
tested : ok !• 10H116 qualified and ordered (thanks to Nevis)
• Optical reception of TTC signal :– Studies still underway :
• receiver used for SPAC does not work at 160 MHz.• Other solutions under investigation
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Details on TTC connectors and
cablesOn Board : USB mini-B receptacle (SMT) version
Molex 54819b (www.molex.com)
Cables : Halogen free, L=40 cm mini-B/mini-B custom cable based on ref. Molex 59204
On the Controller, mini-B receptable installed by pair using either :
• PCB with 3.2 mm local thickness with standard mini-B connector • Standard 2.4 mm standard PCB + thread whirled cable connectors
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Connectors on the controller
Optical Part for TTC and SPACUp to 22 TTC conectors (by pairs on the 2 faces)
TTC connector pin out on boards
1 = GND2 = (D-)TTC-3 = (D+)TTC+4 = not connected5 = GND
+ shield connected to GND
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Prospects• A lot of work has been done :
– Test of SPAC3 ASICs : ok !
– Test Bench set up for Irradiation test of SPAC ASICs : ok !– Rad Hard Optical solution tested and qualified for the SPAC :
ok !– TTC connectors (USB mini-B) and TTC Fan out on the controller :
ok !
• Every SPAC system aspects is under control except :– Irradiation tests for SPAC3 Asic to be performed– Bus loading for EMEC Special crate is critical
• Controller Board design is achieved except :– Optical reception of the TTC signal still under study– Final design of the board (placement and routing) :
easy !