1. Refurbished Booster RF John Reid December 12, 2012

2. f Fermilab 4 Booster Cavities Refurbished to Date –S/N 2002 – Removed St 8 – August 2011 ? Refurbishment started – August 26, 2011 Refurbishment completed – February 2012 Electrical testing completed – March 5, 2012 Installed in tunnel – April 2, 20212 –S/N 1011 – Removed St 7 – May 21, 2012 Refurbishment started Refurbishment completed – June 6, 2012 Electrical testing completed – July 18, 2012 Installed in tunnel - –S/N 1008 –Removed St 5 – June 14, 2012 Refurbishment started June 2012 Refurbishment completed Sept 6, 2012 Electrical testing completed Sept 24, 2012 Installed in tunnel – November 14, 2012 –S/N 1017 – Removed St 6 – June 14, 2012 Refurbishment started – September 17, 2012 Refurbishment completed – October 29, 2012 Electrical testing completed – November 13, 2012 Installed in tunnel – November 14, 2012 December 12, 2012John Reid2

3. f Fermilab Summary Cavity S/NRadiation Tin ShimsRework Cone CoolingVacuum Class0.005FlangesConfigWork 20022YesNoParallelYes 10113Yes3SeriesNo 10083Yes3SeriesNo 10172Yes3SeriesNo December 12, 2012John Reid3

4. f Fermilab Tuner Stem Temperatures December 12, 2012 John Reid4 Cavity S/NCavity running on standard Booster curve at 15 Hz TunerAnode Stem Temp F15 kV18kV21 kV23.5 kV 2002 Back - Label130140160 Back - Probe124138155165 Bottom - Label130150160190 Bottom - Probe117143138170 Front - Label130140160180 Front Probe124138155163 1011 Back - Label130 150160 Back - Probe120131141150 Bottom - Label130 150 Bottom - Probe112121136142 Front - Label130 150160 Front Probe119131133146 1008 Back - Label130 150160 Back - Probe120128.5144150 Bottom - Label130135150170 Bottom - Probe119124.5142145 Front - Label130140160170 Front Probe122129148154 1017 Back - Label115130140150 Back - Probe 115124135140 Bottom - Label 110115130 Bottom - Probe104110120 Front - Label115130 150 Front Probe112116124132

5. f Fermilab December 12, 2012 John Reid5 Fitting stem to cavity center flange

6. f Fermilab December 12. 2012 John Reid6

7. f Fermilab December 12, 2012John Reid7 Stem to cavity interface problem Area marked where stem does not fully contact cavity surface

8. f Fermilab December 12, 2012John Reid8 Finished flange after resurfacing Partial flange facingAdded weld material to flange surface

9. f Fermilab December 12, 2012 John Reid9 Original cavity flange surface Added weld material to flange surface Finished flange after resurfacing

10. f Fermilab December 12, 2012 John Reid10 Original cavity flange surface Added weld material to flange area Finished flange after resurfacing

11. f Fermilab December 12, 2012 John Reid11 Finished mating Flange on Cavity Finished tuner Flange

12. f Fermilab CONCLUSION December 12, 2012 John Reid12 4 Cavities refurbished, tested, & installed Between 50 % to 70 % of the cones had to be stripped and rebuilt due to burnt or damaged fingers. Cavities from stations 1 and 3 (which will be cavities 5 & 6 to be refurbished) have been pulled from beam line and are waiting to be worked on.