RICH STATUS REPORT

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RICH STATUS REPORT

• AMS TIM
• 27-31 October 2008
• Carlos Díaz Ginzo
• CIEMAT

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Content

• HV-BRICK
• RHV vibration test
• EHV RHV TVT test
• JINFR repair
• Schedule
• RICH assembly status

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RHV vibration test at INTA

• 5 units tested with the following results
• Visual inspection after test reveals no damage on
  the units or on the Zn washers.
• Sine sweet spectra comparison indicates no change
  of behavior.
• Functional test before and after show no damage
  on the electronic.

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RHV THERMAL SYSTEM
Zirconium washers
Silver Teflon
Heaters
DTS sensors
Thermostats
HV radiator
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TVT Test Setup
HV-Bricks
Loads

• 40x2 channels in total with nominal load.
• Resistor divider factor 1/90.
• 4 different voltages settings measured at each
  output on both A and B linear regulators and
  elevators.

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TEST PROFILE AND THERMOCOUPLES
TRP

• TAMB ambient temperature
• TNO-max maximum non-operating temperature
  65oC
• TNO-min minimum non-operating temperature
  -35oC
• TQ-max maximum operating temperature 65oC
• TQ-min minimum operating temperature -20oC
• According to AMS02-SP-CGS-002 document
• Thermostat test performed only on two units

• Thermocouples
• 1 Th in Shroud 3 Th in Table
• 8 Th on HV-Brick
• 2 Th on loads

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TEST RESULTS ECAL 80_05 80_06
D
D
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TEST RESULTS RICH Bricks 02 03
D
D
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THERMOSTAT TEST

• Following AMS02-SP-CGS-002 and AMS02-RP-CGS-008
• Thermostats operation (nominal Open -15 C, Close
  -18 C)
• Since on orbit they will be used even during
  worst cold operative cases, they will be tested
  in both configuration, operative and non
  operative.
• All Heaters and Thermostat worked properly
  during all the test
• DTS temperatures were recorded when Thermostat
  were switched on/off.
• Determination of minimal environmental
  temperature when heaters on
• Starting from the minimum non operative
  temperature (HV brick OFF, heaters OFF), the
  heaters will be enabled and the TV chamber
  temperature will be decreased in steps of 2C
  until the heaters will be still able to keep the
  TRPs temperature above the minimum non operative
  one (HV brick OFF, heaters ON). The minimum
  environmental temperature that can be experienced
  by the non operative HV bricks will be defined
  hence by the test.

• Starting from the minimum operative temperature
  (HV brick ON, heaters OFF), the heaters will be
  enabled and the TV chamber temperature will be
  decreased in steps of 2C until the heaters will
  be still able to keep the TRPs temperature above
  the minimum operative one (HV brick ON, heaters
  ON). The minimum environmental temperature that
  can be experienced by the operative HV bricks
  will be defined hence by the test.

Heaters on
Heaters on
DT5 C
DT14 C
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JINFR repair
AMS wire link JINR?? CDP implemented on board do
not work properly, due to either improper layout,
and/or crosstalk with other signals on board
(LV1, busy)
Board tracks were cut and externally wired, as
shown in the pictures.
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JINFR Test and Final assembly
To implement the solution for the JINFR, we had
to remove all the JINFR boards already installed
on the detector and used during the cosmic ray
test. That implied disconnecting all the internal
cables and kaptons from the boards, and then
removing the boards from the triangular Grids.
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Software online

• Setup with 2 JINFR 2 RHV for software test
  (Andrei Kunin).
• Gustavo is making the DSP modifications decided
  by the collaboration.

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RICH assembly status

• Finish ATS RICH080102-1
• Route missing cables, complete ATS RICH080212-3,
  prepare external cabling routing, and make
  optical wayouts.
• Install the Debris Shield and Venting system.
• Close the Optical Seal
• Other activities
• TEST

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Finish ATS RICH080102-1 Steps 15, 16, 17, related
to the mechanical assembly of the detector. Close
this ATS.
Eye bull removal, step 15
Eye bull removal, step 15
Install electronic covers, steps 16, 17
Install electronic covers, steps 16, 17
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Route missing cables, complete ATS RICH080212-3,
prepare external cabling routing, and make
optical wayouts.
Make 4 new cables wayouts
Glue HV cables to HVPP
Connect internal cables
Ground internal cables shielding
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Install the Debris Shield and Venting system.
Following CGS venting analysis we have design a
venting system attached to the DS panels. All
the pieces of the venting system are in surface
treatment and the modification of the DS are on
going.
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Optical seal
To have the possibility of future access to the
RICH electronic, we will attach the optical
blanket to the DS by Velcro and join the upper
and lower blankets also with Velcro making some
loops.
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Other activities

• Close LTOF main structure holes to increment
  the optical seal protection. This solution was
  tested during the pre-integration of the
  detector.

• To close the ATS RICH080118-2 related to the
  Aerogel panel installation we will install the
  Teflon bag support under the LTOF structure,
  connect the Teflon bags and fill the container
  with N2.