Download - 2 nd Sound Diagnostics Progress
2nd Sound Diagnostics Progress
Kitty Liao
CERNBE-RF-KS
10th SPL Cavity Group Workshop Meeting 07 March 2011
2
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