AMS02 Scintillator Electronics Status

1
AMS-02 Scintillator Electronics Status
D. Casadei, G. Castellini AMS Bologna Group
AMS TIM _at_ CERN, 24-28 Oct. 2005
2
Electronics units

• 4 units with1 S-crate1 SHV1 (T)SPD

3
Scintillator electronics

• Power supplies for ACC and TOF
• SHV high voltage
• DC/DC converters S9074 (3.4 V, 5.6 V), S9052
  (5.6 V)
• Front-end electronics
• SDR2 data collection and reduction slow
  control
• SFEC charge (TOF dynodes), inside detector
  planes
• SFET2 charge and time (TOF anodes)
• SFEA2 charge/ history for ACC plus two charge
  and time (TOF anodes)
• SPT2 pre-trigger unit, fast trigger input to
  SCrate, and SFEC transceiver
• Each of the 4 S-crates contain
• 1 SDR2
• 4 SFET2
• 1 SPT2 (hosting connectors for 2 SFECs)
• 1 SFEA2

4
Scintillator electronics

• ACTIVITIES
• Board and crate FM production assembly will be
  done by CSIST
• The production at CSIST will be managed by INFN
  Bologna/Perugia
• QM2 Design (schematics/gerber files) and
  documentation for CSIST is in charge of INFN
  Bologna/Florence
• INFN Bologna in charge of the component
  procurement through MIT
• MIT/Florence are designing and testing Actel, DSP
  software system integration
• QM1 production, for stand alone and qualification
  tests, is in Italy (INFN Bologna/Florence)
• Qualification tests will be done in Italy (INFN
  Bologna/Perugia)

5
Scintillator electronics
6
Scintillator electronics

• SFEC
• QM1 calibrated in Bologna for dynode dynamic
  range and tested in Florence for thermal
  behaviour.
• QM2 ready in Florence for qualification tests
• CAEN ready for FM boards production (3 weeks)
• 8 FM shall be mounted on the TOF detector and
  will have common vibration tests.
• QM1/2 shall be used for integration tests in CERN

7
Scintillator electronics

• QM1 thermal test results (8 hours 5 temp. value)
• Temperature var. -45 C to 75 C
• pedestal variation /- 3
• gain variation /- 7
• SFEC works properly over the full range of temp.
• TOF counters operating temp. -40 C / 55 C
• QM2 qualification tests (Thermal vibration)
• calibration tests full 3 days
  procedure with temp sensor
• on Pouxe chip

8
Scintillator electronics

• SDR2 QM2 gerber and documentation under review
  with CSIST , production of printed board will
  start as soon as possible
• (Minor changes for mechanical support of the
  front panel and serigraphy)
• SDR2 QM1 assembly ongoing in Florence (boards
  ready (FR4)) for integration tests
• SDR2 EM board has been used for development of
  CDP and Front end Actel
• CDP tested in CERN
• Front End Actel under test in Florence

9
Scintillator electronics

• SPT2 QM2 gerber and documentation under review in
  Florence (ready to be sent to CSIST)
• SPT2 QM1 to be produced in Florence (two weeks)
  (FR4) for integration tests
• SPT2 EM board under test
• Connection to SFEC SDR ok
• Trigger Actel already delivered by Lin to be
  tested (link test with SDR and trigger logic test
  with pattern generator) (Florence)

10
Scintillator electronics

• Backplane QM2 gerber and documentation under
  review in Florence (stopped for modification)
• After a meeting with anti-counters peoples has
  been decided to modify board pin out to allow to
  install a SFEA board on SFET socket
• Test in Aachen test beam can be done with 3
  SFEA on one backplane

11
Scintillator electronics

• SFET EM under test in Bologna
• SFET/SDR link implemented by BolognaFlorence
• SFET2 QM1 design and documentation will start
  next week
• SFEA2 is a subset of SFET2
• TOF input circuits shall be substituted by a
  Anti-Counter preamplifier which will be tested by
  Aachen
• Merging of the two designs will be done in Italy
• Tests in Bologna and Design Documentation in
  Florence will be done in parallel. New SFET2
  design ready for Jan 2006.

12
Power supplies

• SHV
• EM HV power supply QM1 control board ready in
  Bologna to be tested in CERN
• In delivery one QM2 and one FM
• DC/DC
• QM2 (1 S9074 (3.4 V, 5.6 V), 1 S9052 (5.6 V))
  ready for assembly
• Eight FM already in production (no coating to
  allow for reworking)
• Remaining four spare FM ready to be produced