Presentations text content in WP3 10 July 2014 QMUL/GAB
Slide1
WP3 10 July 2014 QMUL/GAB
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Status of Sensor Testing Setup at QMUL
Re-structuring of QMUL Physics & Astronomy
June/July
2013
:
Evacuated Physics
b
uilding and clean room: dis-assembled probing system & moved everything to new clean room.
June 2013 – April 2014.
Clean room air handling fiasco. Apparently fixed now.
3
rd
July
: AJB+GAB started re-assembling
probe
station.
Knock-on effects from building works continue:
(
building
under wraps, camping out
,
interruptions to services
).
Scheduled to re-inhabit offices mid-September.
[My personal reaction to this extensive disruption is quite simply unprintable]
Slide2WP3 10 July 2014 QMUL/GAB
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Recently (3rd/4th July)Refurbished cable feedthrough box (seals perished).Unclamped stages, re-attached microscope, camera, vacuum, prober control box.Booted ** Windows2000 ** PC + NUCLEUS prober sofware=> Checked stage motion still working (in general).
Needed, to regain July 2013 status :Run Labview (CAV 2013 vn): Check chuck motion –wafer alignment procedure and strip probe pattern.Check chuck planarity (uniform needle scrub)Re-cable GPIB to instrumentsRe-install blind on cabinet (Jag)(maybe replace video camera. Service Nitrogen generator.… )
Slide3WP3 10 July 2014 QMUL/GAB
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Further ahead:Bart’s scheme to speed up probing using probe card / switch matrix.Need new RA + training (GAB thinly spread and ageing).
Further work required in order to scan ATLAS Sensors:
Install CAV/QMUL chuck
adapter
(for ATLAS sensors. Currently at CAV).
Bias and Signal Cables: make/install. (+ Patch panels if necessary)
(trivially) incorporate UPS
Make new bias stand-off box (1000V) for Wayne-Kerr LCR meter. (+ install protection unit).
Check functionality of instruments & strip-checker measurements
At this point we would need an expendable ATLAS sensor to verify / compare results.
Slide4WP3 10 July 2014 QMUL/GAB
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Not related to Sensor testing, but need to flag somewhere
Preliminary Thermal simulation of convection in the barrel (Liverpool WP6, 9
th
July)… indicates may be large thermal gradients, dependent on cooling path of DCDC converter. Need a thermal description to understand this better.
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WP3 10 July 2014 QMUL/GAB
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