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Ljubljana,02.04.2004,

Ljubljana,09.04.2004,

Ljubljana,14.05.2004,

Ljubljana,04.06.2004,

Ljubljana,11.06.2004,

Ljubljana,18.06.2004,

Ljubljana,16.07.2004.

Ljubljana, 16.07.2004

Present: Mare, Dejan, Andrej, Lado

• Reconstruction ?:

• Alignment Si-Si(cosmic run) ?

• Alignment Si-SPRINT-SPRINT ?

Ljubljana, 18.06.2004

Present: Mare, Dejan, Andrej, Lado

• Parcel did not arrive to the States yet. Enquiry in progress.(Neal).

• Noise is proportional to the numer of sensors used.

Meeting in three weeks.

Ljubljana, 11.06.2004

Present: Mare, Dejan, Andrej, Lado

• Mailing to the US:

  • Partly send, more to come (PEW)

• Andrej brings the thermometers.

• Andrej in Michiganu: June 19 to July12 (Gabriela from June 16).

• Marko in Michiganu: June 23 - 27

• Plans for summer/autumn:

  • Reconstruction:

    • install the software in Ljubljana (with help from Lisha)

    • calculate on the cluster (?)

  • Dejan prepares an article and final report if measurements are fine.

Meeting on Friday, next week.

Ljubljana, 04.06.2004

Present: Mare, Dejan, Andrej, Erik

• DB:

  • 5 pieces made, 1 equipped

  • tested for a day in CERN. Problems. More tests needed.

• Equipped modules:

  • lj3557a: 0.5 mm

  • lj3557b: 1 mm

  • lj3557c: 1mm

  • lj3557f: 1mm

  • lj3557g: 1mm

  • All tested separately.

  • Large guard-ring current: 1-10 uA at 90 V, a bit different from hybrid to hybrid

• Mechanics:

  • operational

  • additional pump for cooling

  • measurement of temperature with a PT100 (as in a car) (Dejan), 2 kom.

Next meeting, Friday June 11 at 15.30.

Ljubljana, 14.05.2004

Present: Mare, Lado, Dejan, Andrej, Erik

• DB:

  • 5 piecces ordered with LVDS buffers

  • buffers on stock (8 pieces; 3 per board)

  • produced by next week

  • If equipped by Wednesday with Andrej to CERN otherwise on Monday, May 24 with Dejan

• hybrids:

  • in CERN three additional hybrids. Total 10.

  • 4 equipped with 1mm sensor, 1 with 0.5 mm.

  • Two working together with preformance matching that of a single one (Peter)

• Mechanics:

  • finished, another iteration with last corrections

  • by May 14: ready to be sent (DHL), customs paper-work ,etc

  • Dejan assembles the mechanical setup while at CERN.

• Timeline:

  • no changes

Next meeting on June 4^th.

Ljubljana, 09.04.2004

Present: Mare, Lado, Dejan, Andrej, Erik

• DB:

  • Andrej and Erik discuss buffers for :sh/shb, shiftreg/shiftregb, res/resb, gck/gckb, dlt/dltb.

  • Design of DB ver 2. finished by Friday, April 23 (Erik) :

    • switch a/b on IB connector (50 pin)

    • potentiometer trace

    • clkin (8a)

    • buffers

  • Orded 5 pieces immediately after the design is finished (Erik)

  • Two new equipped DB: May 17 (Erik gives 2 week dedline for production)

• Hybrids:

  • Jure equipps three more hybrids (Lado).

  • Mare takes the hybrids to CERN, if finished by Monday, June 26.

  • The rest of the hybrids are tested and equiped at CERN (Peter, Enrico). There are 7 hybrids in CERN now.

• Mechanics:

  • Stauts: April 9^th:

    • all pieces buit two in production

    • technical drawings being completed for the last two pieces

    • estimated deadline probably end of April, possible delays.

  • Pablo gets informed of the changed timeline.

  • Additional metal sides replacing SPRINT heads should be also made.

• Timeline:

  • Mechanics at CERN May 17

  • Andrej at CERN: May 19 – 31

  • Dejan at CERN: May 25– 31

  • At CERN, end of May:

    • equip and test 5 hybrids with 1 mm thick sensors and DB (ver 2)

    • assemble the setup with 5 hybrids

    • test operationability of 5 sensor system with radio-active sources and comsic rays(?, relative alignement)

    • check if machanics is compatible with the SPRINT heads

  • Secondary detector in Michiganu to replace SPRINT? (Peter, Neal)

  • End of May SPRINT modules, mechanics, silicon hybrids are sent to Michigan (? , Peter, Neal)

  • Andrej at Michigan: June 17– July 7

  • Metting at Michiganu June 24-25.

  • Michigan:

    • full system is tested (si + sci)

    • image sources/phantoms

  Next meeting Friday, May 7 at 15.30

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Ljubljana, 02.04.2004

Present: Mare, Lado, Dejan, Andrej (telefonsko)

• Hybrids: Finished; at CERN from 24.3.

• Distribution board V1:

  • Finished and at CERN from 24.3.

  • Testing at CERN revealed some errors:

    • Line A8 (clikin on IB) short-circuited to Vee. Problem solved with improvised solution.

    • Incoming connector (50-pin) has switched A in B contact row. Special adpater on the cable from IB used.

    • On Andrej's return to Ljubljana with accurate specification of erros and list of necessary adjustments a new iteration of the distribution board (DB) is foreseen (V2).

• Mechanics: Last pieces of information regarding the connectors send to Pablo on March 24^th .

• Basic plan met. (Moving on to the extrapolated part).

• Testing at CERNu:

  • 1st hybrid (A) equiped with two chips and 2nd hybrid (C) with one chip.

  • hybrid A:

    • works properly with and without the distribution board (DB)

    • noise 1-2 ADC counts

    • stops working if cable to long (0.5m) with DB (it was not tested withot DB)

    • will be euipped with a sensor and further tested.

  • hybrid C

    • doesn't work with DB

    • but works with a direct connection to IB with a short cable (no DB)

    • the problem will be investigated by observing control signals of the chip (already at CERN or later in Lj.) Noise: weak contol signals set the chip nearly out of the operating conditions.

• Extrapolated plan foresaw 5 hybrids with sensors by April 9^th. Is this still achievable?

Next meeting on Friday April 9^th probably not possible . Either on Thursday, April 8^th (phone-meeting) or on Tuesday, April 13^th?

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