![Page 1: Second Refurbished Booster RF Cavity for 15Hz](https://reader036.vdocuments.site/reader036/viewer/2022062422/56813e65550346895da86df0/html5/thumbnails/1.jpg)
Second Refurbished Booster RF Cavity for 15Hz
John Reid
July 18, 2012
![Page 2: Second Refurbished Booster RF Cavity for 15Hz](https://reader036.vdocuments.site/reader036/viewer/2022062422/56813e65550346895da86df0/html5/thumbnails/2.jpg)
fFermilab
• Booster RF Cavity removed from Station 7 – SN-1011– Removed May 2, 2011– Cavity was picked for the following:
• Station 8’s cavity ready to install so 7 was the logical choice to pull next.
• Cavity from station 7 is class 3 (radioactive).
– Cavity moved into cave at MI-60 in preparation for disassembly.
– Cavity vacuum leak checked OK.– Cavity with tuners was assembled with 0.005” tin shims
installed on front and back tuner stems.– Cone cooling connected in series with each ½ of outer ferrite
tuner cooling.• Flow rate in test stand measured 1.5gpm
July 17, 2012 John Reid 2
![Page 3: Second Refurbished Booster RF Cavity for 15Hz](https://reader036.vdocuments.site/reader036/viewer/2022062422/56813e65550346895da86df0/html5/thumbnails/3.jpg)
fFermilab
– Center casting single turn cooling flow is 0.8gpm– Had to repair center cooling tube on this cavity due to a
water leak that occurred years ago. Repair was successful.
– Power removed by water ~ 1.6kW
July 17, 2012 John Reid 3
![Page 4: Second Refurbished Booster RF Cavity for 15Hz](https://reader036.vdocuments.site/reader036/viewer/2022062422/56813e65550346895da86df0/html5/thumbnails/4.jpg)
fFermilab
Standard Ferrite Tuner
March 7, 2012 John Reid 4
![Page 5: Second Refurbished Booster RF Cavity for 15Hz](https://reader036.vdocuments.site/reader036/viewer/2022062422/56813e65550346895da86df0/html5/thumbnails/5.jpg)
fFermilab
July 17, 2012 John Reid 5
Cavity 1011
Tuner Power Stem Stem Stem
Anode Voltage to water Front Bottom Back
per Tuner Tuner Tuner Tuner
F F F
15kV 119 112 120
18KV 2.88kW 127 125 130
21kV 5.54kW 140 135 144
23kV 5.8kW 146 142 150
![Page 6: Second Refurbished Booster RF Cavity for 15Hz](https://reader036.vdocuments.site/reader036/viewer/2022062422/56813e65550346895da86df0/html5/thumbnails/6.jpg)
fFermilab
Inside Center of Cavity
July 17, 2012 John Reid 6
![Page 7: Second Refurbished Booster RF Cavity for 15Hz](https://reader036.vdocuments.site/reader036/viewer/2022062422/56813e65550346895da86df0/html5/thumbnails/7.jpg)
fFermilab
Anode Blocking Capacitor
March 17, 2012 John Reid 7
![Page 8: Second Refurbished Booster RF Cavity for 15Hz](https://reader036.vdocuments.site/reader036/viewer/2022062422/56813e65550346895da86df0/html5/thumbnails/8.jpg)
fFermilab
Anode Blocking Capacitor
March 7, 2012 John Reid 8
![Page 9: Second Refurbished Booster RF Cavity for 15Hz](https://reader036.vdocuments.site/reader036/viewer/2022062422/56813e65550346895da86df0/html5/thumbnails/9.jpg)
fFermilab
Std Operating Waveforms
July 17, 2012 John Reid 9
Phase Det Error – Light BlueAnode Prog – Blue – 23kVpkRF Gap Envelope – GreenPA Screen I - Purple
![Page 10: Second Refurbished Booster RF Cavity for 15Hz](https://reader036.vdocuments.site/reader036/viewer/2022062422/56813e65550346895da86df0/html5/thumbnails/10.jpg)
fFermilab
Std Operating Waveforms
July 17, 2012 John Reid 10
FBI – YellowFBV – GreenPlate I - Blue
![Page 11: Second Refurbished Booster RF Cavity for 15Hz](https://reader036.vdocuments.site/reader036/viewer/2022062422/56813e65550346895da86df0/html5/thumbnails/11.jpg)
fFermilab
Cavity S/N 1011
• Parameters at 23kV anode voltage @15Hz for 12 hours.– Gradient ~52.9kV peak accelerating voltage– Blocking capacitor temperature = F– High voltage filter chokes – F– Inside drift tube temperature = F– Drift tube temperature = F– Beam tube temperature (on Mu-metal shield) = F– Cavity outer shell temperature by PA = 114 F– Ceramic window outer ring temperature = 110 F– Ferrite Power removed to water = 5.8kW per tuner– Back tuner stem temperature = 150 F– Front tuner stem temperature = 146 F– Bottom tuner stem temperature = 150 F– Cavity vacuum = 1.17 x 10-7 Torr
July 17, 2012 John Reid 11