Module Loading Site QualificationG. Darbo - INFN / Genova SQTF, 25 / 11 / 2004

Module Loading TF - Genova Site

Module Loading TF - Genova Site

G. Darbo - INFN / GenovaG. Darbo - INFN / GenovaNovember 25, 2004November 25, 2004

Copy of this talk on the CDS Agenda:Copy of this talk on the CDS Agenda:http://www.ge.infn.it/ATLAS/SQTF/Minutes/Minutes_04-11-25_aux/

Module Loading Site QualificationG. Darbo - INFN / Genova SQTF, 25 / 11 / 2004 2

Cooling & Thermal CyclesCooling & Thermal Cycles Cooling circuit modified:

Lauda RK20-KS with Ethylene Glycol (75%) + H2O (25%) running at -30ºC to cool the box at ~ -3º

Lauda RP855C with C8F18 to cool or thermal cycle the stave. Problems encountered with Lauda chillers:

Lauda RP845 break down, under repair -> Given a new and more powerful version in evaluation: RP855 -> faulty behaviour from time to time of the refrigerator…

Lauda RP855 has a pressure/suction pump (see next slide) for fluid circulation in the application. We suspect that the suction generates cavitations in the C8F18 (bubbling) -> fluid lost.

The system is now capable to run thermal cycles between ±30º on the power off modules (see slide)

Module Loading Site QualificationG. Darbo - INFN / Genova SQTF, 25 / 11 / 2004 3

Lauda RP855 Pressure/Suction Pump

Lauda RP855 Pressure/Suction Pump

Module Loading Site QualificationG. Darbo - INFN / Genova SQTF, 25 / 11 / 2004 4

Thermal CyclesThermal Cycles

QuickTime™ and aTIFF (LZW) decompressor

are needed to see this picture.

Module Loading Site QualificationG. Darbo - INFN / Genova SQTF, 25 / 11 / 2004 5

Stave S4028 - Electrical TestStave S4028 - Electrical Test LOAD test completed:

Some dead pixel on the first row of several chip (see last week presentation) are not really bad - they respond to source.

Thermal cycles done STAVE test underway

Total Bad Pixels (Digital + Analog)

0

50

100

150

200

250

300

350

M6C M5C M4C M3C M2C M1C M0 M1A M2A M3A M4A M5A M6A

Module on Stave

No. of bad pixels

BURN

LOAD

Module Loading Site QualificationG. Darbo - INFN / Genova SQTF, 25 / 11 / 2004 6

S4024 - Robot UpgradeS4024 - Robot Upgrade Third production stave under loading

11 modules loaded -> completed tomorrow.

A Heidenhain Linear Encoder will be added to verify/correct the Z movement of the robot

A better visual inspection/measure digital microscope is under evaluation to improve module positioning in the garage position and to improve the Z precision of the CMM.