805 MHz Pillbox Cavity Button Surface StudyII Mukti
805 MHz Pillbox Cavity Button Surface Study-II Mukti R Jana, D. Hicks, A. Moretti and Y. Torun Fermi National Accelerator Laboratory 12 March 2012
Outline of the Talk • Line surface measurement of DS Beryllium button • 50 X magnification image of both US and DS Be button • SEM image of US Be button (preliminary) • DS Copper button • BD spot calculation for Cu button 2
Cross sectional view of 805 MHz Pill Box cavity U/S D/S LBL Pillbox cavity with 2 Be buttons 3
Dimension of Button 4
Down Stream Beryllium Button 17. 04 m Top Surface 5
Down Stream Beryllium Button Cont…. 83. 614 m 6
Down Stream Beryllium Button Cont…. 41. 533 m 7
Down Stream Beryllium Button Cont…. 8
Down Stream Beryllium Button (50 X Magnification) Top Surface 9
Top surface of Up Stream Beryllium Button (Magnification: 50 X) 10 X 10
Be_Sphere_US_EDX Results 3/1/2012 9: 12: 36 AM D Hicks Spectrum C Cl Total Spectrum 1 (Gray area) 100. 00 Spectrum 2 (White area) 96. 01 Spectrum 3 (Black area) 100. 00 Spectrum 4 (Dark area) 100. 00 3. 99 100. 00 11
SEM Image of Be Button - US 12
Cu Button - Down Stream (Top) 13
BD Spot Calculation Upstream Be Button Downstream Be Button 14
5 US 50 54 Total # of spot: 210 5 5 44 43 4 15
DS 7 82 86 Total # of spot: 377 5 6 92 94 5 16
- Slides: 16