Status of the GPS tests and implementation

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Status of the GPS tests and implementation
AMS TIM CERN 24-28 October 2005 Claude
Zurbach Laboratoire de Physique Théorique et
Astroparticules - Montpellier
CERN 24-28 October 2005 - AMS Tim - Claude
Zurbach LPTA Montpellier
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Outline

• PART 1 aims of November test
• PART 2 collaboration
• PART 3 technical scheme
• PART 4 details
• PART 5 schedule for 2006

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Aims of the November 2005 test
What do we expect from this test?

• Check of preliminary version of the hardware
  GPS QM, power supplies, cables, connectors
• Integration in the AMS DAQ scheme
• Validation of GPSE EM card
• Validation of preliminary GPS software,
  communication via RS232 RS422 via GPSE card
• Test of GPS commands as input and GPS data as
  output
• (status and UTC time)
• Validation of the voltage control via GPSE

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GPS integration in AMS-02 collaboration manpower
Collaboration manpower

• MIT M. Capell, A. Koulemzine, A. Lebedev, A.
  Rozhkov
• implementation in DAQ/Trigger, provides power
  supplies
• ETH Zürich V. Commichau, G. Viertel
• EM of GPSE card
• LPTA A. Jacholkowska, C. Zurbach
• provides GPS hardware and software, interface
  with CNES and Alcatel-Alenia
• Alcatel-Alenia, CNES Toulouse technical
  commercial engineers
• Technical support

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November 2005 test general technical scheme
Not this time
GPS
Trigger system JLV1
PPS
Antenna or simulator
GPSE
RS422
Power supply 6.3 V 5.2 V
USCM
Virtual
Can Bus
GPS monitoring TC TM (JMDC)
Communication scheme no antenna signal PC
emulates DAQ system (JMDC), sending Telecommands
and getting Teledata GPS provides Pulse Per
Second (PPS) and Teledata GPSE provides UTC time
reference to the DAQ system USCM gets UTC time
and status from GPS via GPSE, and transmits
Telecommands
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November 2005 test general technical scheme
GPSE Card
GPS Simulator
Power supplies
JMDC simulator
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November 2005 test details
ETHZ conception and realization of GPSE card (EM)
GPSE Epochgate

• Two major functions
• 1 EPOCH Gate opens 1 second activity period
  (trigger blocked) which covers
• 500 ms UTC max time acquisition
• activates communication GPS ?? DAQ (JMDC),
  triggered by PPS signal

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November 2005 test details
GPSE Comgate
Operation Pulse Per Second signal opens an
Epochgate which permits internal clock
synchronization in the Trigger System (not in
this test) and activates communication for
Teledata (GPS status and UTC time)
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November 2005 test view of GPSE
USCM
RS422 I/O
Serial communication to/from USCM
GPS Simulator
GPSE EM Board
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November 2005 test details
MIT preparation of the global architecture
(DAQ), power supply and power control design
GPS power
Operationnal GPS, AST laser alignement system
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November 2005 test details
LPTA develops GPS software (validation commands
of system startup and data acquisition)
Software scheme
Procedure Start the GPS in operationnal
mode Verify GPS status Send time to the
GPS Specification data output Get n UTC time
values
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GPS integration schedule for 2006

• Flight module GPS delivery from Alcatel-Alenia
  Q3 2006
• Construction of power supply system
• Further construction and qualification of the
  GPSE card QM and FM
• Production progress meetings and Test Readiness
  Review with Alcatel-Alenia (first meeting
  November the 17th)
• Before delivery two tests periods with QM
  from CNES at CERN