2nd Sound Diagnostics Progress

Kitty Liao

CERNBE-RF-KS

10th SPL Cavity Group Workshop Meeting 07 March 2011

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2nd Sound Diagnostics Progress

I. Noise reductionII. Membrane sputtering III. Mechanical parts manufacturing

3/7/2011

I. Noise reduction II. Membrane Sputtering III. Mechanical parts

2nd Sound Diagnostics Progress K. Liao 10th SPL cavity group workshop

3

I. Noise reduction

1. 50Hz: Battery driven oscilloscope (Tektronix

2. Battery powered amplifier circuit for OST

3. Shielded cables for thermometers

4. Rack to shield all equipments

5. EMI filter to suppress high frequency noise

Amplifier circuit (most sensitive)

Oscilloscope

Pump (most noisy)

Rear view

Class 1

Class 2

Class 3

Class 4150

mm150mm

300mm

3/7/2011

0.1uF

+

-

Cost

1M ohm

100K0.1 uF 0.022uF

1M ohm

20K

470K

Vid r i

I. Noise reduction II. Membrane Sputtering III. Mechanical parts

2nd Sound Diagnostics Progress K. Liao 10th SPL cavity group workshop

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II. Membrane sputtering for the OST

• Membrane sputteringPore size: 0.2 micron meters

Thickness: 6-11 micron metersSputtering material: Gold and Titanium

• Membrane picture SEM session(M. Scheubel:EN-EMM)

Ti (rough)

Ti (shiny)

Al

Au , shiny (up), rough (bottom)

Membrane holder3/7/2011

I. Noise reduction II. Membrane Sputtering III. Mechanical parts

2nd Sound Diagnostics Progress K. Liao 10th SPL cavity group workshop

(W. Vollenberg :TE-VSC)

52nd Sound Diagnostics Progress K. Liao 10th SPL cavity group workshop

II. Membrane sputtering for the OST

• 100x 1000x 5000x

3/7/2011

From Cornell

I. Noise reduction II. Membrane Sputtering III. Mechanical parts

6

Membrane sputtering for the OST

3/7/2011

I. Noise reduction II. Membrane Sputtering III. Mechanical parts

2nd Sound Diagnostics Progress K. Liao 10th SPL cavity group workshop

7

III. Mechanical Parts

10 pieces of OSTs• Part 1 : Aluminium sensor lid opening- 17mm for the conduction

• Part 2: Brass electrode• Part 3: Aluminium back plate• M1/M2 screws• Epoxies for attaching the electrode

and SMA connectors • By Christophe Nicou (BE/RF)3/7/2011

I. Noise reduction II. Membrane Sputtering III. Mechanical parts

2nd Sound Diagnostics Progress K. Liao 10th SPL cavity group workshop

Q & A

Thank you very much!

Kitty.Liao@cern.ch

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