Status of the rt CH-cavity

- Anja Seibel -

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Outline

• CH-Cavity• CH-Parameter• Heat distribution• Cooling concept• Final CH-Cavity• First measurement results

02.10.2013

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CH-Cavity

02.10.2013

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• the CH-Cavity consists of 5 gaps with an operating frequency of 175 MHz

• the cavity has a diameter of about 770 mm (665,4 mm Tank inner diameter) and a length of 463 mm (383 mm Tank inner length)

CH-Cavity

02.10.2013

21 mm

30 mm34 mm

24 mm

463 mm

770

mm

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• 1 Inductive input coupler• 4 Pick ups• 2 Tuners• 1 Vacuum pump port

1

2 3

4

CH-Cavity

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CH-Cavity

02.10.2013

• The tuning is done by two cylindrical tuners. One is adjustable in height (80 mm) and one is static

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CH-Cavity

220 mm

Dyn. Tuner [mm] 160 220 240

Frequency [MHz] 176.0 175.3 174.6

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CH- Parameter

02.10.2013

Parameter Unit Value

Gaps 5

Frequency MHz 175

Tank length mm 383

Tank diameter mm 665.4

Aperture diameter mm 24

Effective Voltage kV 325

Q-Factor 14000

Shunt impedance MΩ/m 80

Losses kW 5

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Heat distribution

02.10.2013

rf current density distribution temperature distribution

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Cooling concept

02.10.2013

Cooling concept for the drift tubes and the stems

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Cooling concept

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Cooling conceptCooling concept for the tank:• 16 cooling channels with a diameter of 10 mm

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Final CH-cavity

02.10.2013

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Final CH-cavity

02.10.2013

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Final CH-cavity

02.10.2013

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Final CH-cavity

02.10.2013

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First measurement results

02.10.2013

Dyn. Tuner [mm] 160 220 240

Frequency [MHz] 175.7 175.1 174.5

Dyn. Tuner [mm] 160 220 240

Frequency [MHz] 176.0 175.3 174.6

Measurement

Simulation

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Electrical field profile

02.10.2013

First measurement resultsSimulation Measurement

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Thanks for your attention!