ESS Docs Document 180-v2

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Electromagnetic Design of the Tuning System for the Re-bunching Cavities of the ESS MEBT

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Tech Note
Submitted by:
Håkan Danared
Updated by:
Håkan Danared
Document Created:
09 Mar 2012, 14:32
Contents Revised:
09 Mar 2012, 16:19
Metadata Revised:
09 Mar 2012, 16:19
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09 Mar 2012, 14:36
The preliminary electromagnetic design of the re-bunching RF cavities for the ESS Medium Energy Beam Transport (MEBT) has just been presented. Therefore, it is strongly recommended to read that report before tackling this new one.
In the present report, a study on the tuning system required for the re-bunching cavity in order to correct the frequency shift due to both the thermal expansion and the manufacturing tolerances is presented. It is expected that the insertion in the cavity of a plunger tuner in a region of high magnetic field increases the resonant frequency of the TM010 accelerating mode. Specifically, the insertion of one ore two slug tuners in the cavity and their effects on both the resonant frequency and the axis electric field are carefully studied here.
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