Nessun titolo diapositiva

1
FM reflector coating Deposition chamber and
mock-up
2
FM reflector coating Roughness check
Three 1/3 parts of The mirror are build Check
sample roughness and reflectivity
100 mm

• samples 1-2
• 3 m.p. on not coated surface
• 3 m.p. on coated surface
• Tool WYKO profilometer

50 mm
Al coated
Not coated
3
FM reflector coating Sample 1 not coated
4
FM reflector coating Sample 1 coated
5
FM reflector coating Reflectivity check

• 3 samples top, center, bottom
• 10 m.p. for each sample
• check on glass samples (3 similar to CFRP ones
  top, center, bottom)
• Tool Minolta 2600d

100 mm
30 mm
6
Bottom SCI
93
88
7
Bottom SCE
8
Top SCI
91
89
9
Top SCE
10
Debris shield layout
11
Debris shield parameters
12
Debris shield mathematical model
13
Debris shield results

• Bumper thickness (mm)
• Honeycomb thickness (mm)
• rear wall thickness (mm)

14
H/W delivery planning

• Primary structure integration in progress gt
  end May
• Laeral box shielding gt mid June
• Remaining shielding ready for delivery (now at
  Bologna)
• Secondary structure (standard parts) ready for
  delivery (now at Bologna)
• Secondary structure (reworked parts) ready for
  delivery (now at Milano)
• Aerogel container (CFRP part) ready for delivery
  (now at Milano)
• Aerogel container (components) filtering system
  TBD valves OK Poron carpet and spacer OK

15
AEROGELUPDATE ON AGING MEASUREMENTS
16
AEROGEL AGING 1st test (1 sample)

• Novosibirsk 1.03
• 1400 h in vacuum
• Monitoring every hour

Transmittance fit to T A e Cl L / ?4
17
AEROGEL AGING 2nd test (3 samples)

• Spectrophotometer Baseline
• Matsushita 1.03 (10 mm)
• Novosibirsk 1.03 (30 mm)
• Novosibirsk 1.05 (25 mm)

18

• Optical Transmittance in vacuum 2700 hours in
  vacuum
• monitoring every 4 hours,3 sample in the same
  conditions

Transmittance fit to T A e Cl L / ?4
19
RICH LIGHT GUIDESCONSTRUCTION
20
Light guides Materials

• INDIVIDUAL LGS ARE MADE OF 16 INDEPENDENT
  PLASTIC RODS GLUED ON A PLASTIC PLATE
• TUBES
• Acrylic Plastic free of UV absorbing additive
  (DIAKON LG 703)
• Material and molding by Good Fellow Co. (England)
• Glue EPO-TEK 301

21
Light guides Assembly

• Glue
• glue outgassing
• automatic glue dispenser
• curing at 40º C (2 hours)

• Assembly
• Tool to perform the correct geometry
• 20 individual tools ? 20 LGs / day

22
Light guides Visual inspection and
Dimensional Control
Bottom size

• Overall dimension (bottom) 17,9 x 17,9 mm
• Spacing 0,5 mm

Production of the 680 Flight Units will be
completed on May 2005
23
Unit Cell Assembly

• Assemble 680 Unit cells for the RICH ( spares)
• Determination of the individual HV value to get a
  uniform response (gains 106 phe)
• Map of cells inside the RICH as function of the
  HV system granularity
• 160 independent lines
• HV range 750-950 V

24
Unit cell Flight Units Procedure
Preparation work
FE Electronics
Pad gluing on PMTs
sorted/matched PMTsFE_Elec
Labelling of the elements
Mounting PMTFE_Elec.housing
Q Control
Preparation of the housings
Injection of potting (by steps)
Cleaning
Gain determination (680 units) (Single photon
spectra)
Bubble elimination (bepressuring by steps)
Curing (oven 12h_at_35-40 deg)
At LPSC (Grenoble)
Thermal test (680 units)
Cleaning of modules
PAD Gluing on PMT
Coating
Potting
25
PMT Gain (x1) in AMS-RICH Detector
26
Unit cell Flight Units Procedure
At CIEMAT (Madrid)
Light Guide Fixation
Magnetic shielding
LG gluing on Pad
Matching module with shielding (thickness and
orientation)
Wire tensioning and gluing
Shielding screwing and gluing
We use new Nylon wires Stronger and more
flexible
27
UNIT CELL ASSEMBLY VALIDATION WITH FINAL
COMPONENTS VIBRATION TEST AT INTA (Madrid)

• 8x1 array with real PMT
• HV Cabling and coating
• Kapton cable

2 individuals unit cells with fake PMT

• Vibration
• to reach the breaking of the wires

• Vibration
• nominal values

28
TEST Results

• 1st individual unit cell
• 240 sec from 3.6 g to 19.16 g
• No degradation on optical contact
• Wire tension Ok after test.
• Shielding screws OK
• 2nd individual unit cell
• 300 sec from 3.6 g to 38.24 g
• No optical contact after 38 g test.
• No wire tension after test but LG is in place.
• Shielding screws OK
• 8x1 array
• 90 sec , 6.8 g
• Optical contact after test is OK, no degradation
• Wire tension its OK.
• All LG are on its correct position.

29
PMTs functional test

• Functional test performed before and after
  Vibration.
• No degradation on gains pedestals

30
READ OUT Electronics

• RDR Integration test at CERN on March 28th
• (Jesus Marin report on electronic session)