WP3 10 July 2014 QMUL/GAB

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WP3 10 July 2014 QMUL/GAB




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Presentations text content in WP3 10 July 2014 QMUL/GAB

Slide1

WP3 10 July 2014 QMUL/GAB

1

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]

Slide2

WP3 10 July 2014 QMUL/GAB

2

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.… )

Slide3

WP3 10 July 2014 QMUL/GAB

3

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.

Slide4

WP3 10 July 2014 QMUL/GAB

4

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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