mtest pixel telescope – status update
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MTest Pixel Telescope – Status Update
David ChristianJanuary 8, 2008
Detector Status/Plan
• Hybrid development complete– 11 good hybrids in hand– Balance waiting for LANL PO to VTT
• Delivery Jan – Feb (less schedule risk than before)
• Module development– 4x HDI prototype received & tested (12 good
parts in hand).– Production purchase requisition is working its
way through the FNAL bureaucracy (Feb delivery expected).
Detector Status/Plan continued
• Plane/Station development:– First prototype plane being tested (one of
three pixel modules mounted so far). – SLINK pcb prototype has been received,
stuffed, & testing has begun (Nevis).• Box/Area:
– Mechanical design to be coordinated with needs of LHCb VELO (1st users) - waiting for MOU to be signed (momentarily).
Plane prototype on CMM
1st module ready to test
DAQ Status/Plan
• DAQ Hardware/Firmware (Nevis)– PCI interface ~90% complete (trigger/timing hooks
not written)– Router ~70% complete (trigger/timing, implementation
of merges, integration of DUT?) – SLINK
• Design complete.• Prototype fabricated; tests begun.• On the optimistic critical path - hoping to begin testing with a
prototype station (or at least a plane) ~ Feb 1.
Software Status/Plan• Online software (FNAL, Syracuse, UNM?)
– Core low level routines exist & have been tested.– Need to specify online, including online/offline
boundary, write & test code.• On the optimistic critical path
• Offline software (Syracuse, FNAL?, UNM?)– Data unpacking– Alignment– Tracking, integration of DUT
• On the optimistic critical path• This task has lagged. Strategic decisions to be
made in the next 2-4 weeks.
Schedule
• Focus on full telescope ASAP. February doesn’t look possible. March?
MTest Telescope
• Constructed using “BTeV pixels”• Pixel size = 50 x 400 (600)• Oriented to provide “precision-x” or
“precision-y” measurements.
Layout
• Aperture ~ 3.5cm x 3.5cm• 4 – 6 stations
Beam
x
y
x
y
Nomenclature
• Station = 2 planes & an SLINK• Plane = 3 modules mounted on a TPG
heat spreader• Module = hybrid pixel detector glued &
wire-bonded to a High Density Interconnect (Kapton flex circuit)
• Hybrid = pixel sensor bump bonded to 4 FPIX2.1 ASICs
DAQ Overview
SLINK ROUTERTwin-ax(sATA)
PCI Interface
Fiber
Trigger/timing signals
Trigger/timing signalsLINUX pc
Removable disk
DAQ
• SLINK communicates with 2x3x4=24 FPIX2.1 chips & with ROUTER.– Relays commands & responses– Collects data
• Deserialize (digital phase follower)• Time order & construct data blocks w/extended
time stamp & chip ID headers• Hierarchy of 2-way data merges
DAQ - continued• ROUTER communicates with PCI interface &
SLINKs and (optionally) DUTs– 12 sATA ports, 4 RJ45 ports– Relays commands & responses– Collects data
• Hierarchy of 2-way data merges (same logic as SLINK)
• PCI Interface communicates with ROUTER & pc– Relays commands & responses– Uses 3 CSRs & 3 ring buffers in the pc main memory
(64 MB)
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