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Hybrid Pixel R&D After BTeV

Hybrid Pixel R&D After BTeV. As of two years ago: FNAL-designed readout chip had two minor fatal flaws. No system demonstration had yet been done. An “extended closeout” R&D program was approved 1 more readout chip submission. Pixel R&D refocused on ILC. Two system tests approved:

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Hybrid Pixel R&D After BTeV

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  1. Hybrid Pixel R&D After BTeV • As of two years ago: • FNAL-designed readout chip had two minor fatal flaws. • No system demonstration had yet been done. • An “extended closeout” R&D program was approved • 1 more readout chip submission. • Pixel R&D refocused on ILC. • Two system tests approved: • Telescope for the forward direction of PHENIX (at RHIC) • Test beam telescope • Both efforts in collaboration with LANL & Columbia U.

  2. Sensor & FPIX2.1 wafers FPIX2.1 fabricated on wafer with “TripT” for D0; fatal flaws fixed; 11 wafers purchased by LANL for PHENIX, 11 by FNAL to support R&D - 2 required for MTest telescope. Sensor wafers produced for PHENIX by CiS (LANL has agreed to donate the x4 sensors for use in MTest)

  3. Sensors & ROCs probed – yield is high Typical FPIX2.1 wafer map Typical sensor IV curve

  4. Hybridization – solder bump bonding done by VTT (Finland) VTT bump-deposition process flow Production orders placed ~10/15/07 Delivery of hybrids is the schedule driver. X-ray made at FCC

  5. Test beam telescope Half-plane = three 1x4 modules Station = two half-planes offset by active area of sensor read out by 1 FPGA 2 stations upstream of DUT & 2-4 downstream (precision x & precision y)

  6. MT6-1A Assets • Climate controlled hut. • Aluminum table on rails allows entire setup to be removed from beam. • Dark box with feed throughs for signals, power, & cooling fluid. • Remotely controlled motors determine (x,y) position of both ends of box. • Local chiller provides closed loop cooling system • CAEN power system can provide LV & sensor bias (“HV”). • Plenty of quiet power is available.

  7. Schedule • Goal = installation in February 2008 (depends on delivery of bump bonded hybrids). • First user = LHCb. • Hybrid pixel telescope will measure every beam particle with good timing and moderate precision (5-10 m). • Anticipate the addition of one station with very high precision (& probably much less good time resolution), such as MAPS.

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