MTest Pixel Telescope – Status Update

David Christian

September 11, 2007

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)

Detector Status/Plan

• Hybrid development complete– 11 good hybrids in hand– Balance waiting for LANL PO to VTT

• Delivery Jan – May (schedule risk)

• Module development– 4x HDI layout ~85% complete (FNAL)– Prototype by end of October, production Nov-

Dec (on the optimistic critical path)

Detector Status/Plan continued

• Plane/Station development:– TPG in hand, reinforcing about to start (FNAL)– Mechanical design underway (FNAL)– SLINK pcb layout & final design is waiting for

completion of 4x HDI (Nevis)

• Box/Area:– Cleanup has started– Mechanical design underway (FNAL)

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

• Prototype tested at ~90% level; linked to 2 modules• Design/layout waiting for 4x HDI• On the optimistic critical path

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

• Strategic decisions to be made in the next 4-6 weeks

Schedule

• Focus on full telescope in ~Feb

• If bump bonding is delayed (past ~Jan)…– Install 1st station + fragments as available

(~Jan?)