Performance of the Karlsruhe Superconducting Proton Linear Testaccelerator

Citron, A.; Kuntze, M.; Brandelik, A.; Herz, Werner; Hietschold, R.; Hornung, Andreas; Kuhn, W.B.; Schulze, Dietmar; Zieher, K.W.

doi:10.1109/tns.1979.4330600

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1981

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“…[1][2][3][4] The helices in these experiments had cylindrical shape with constant pitch and diameter. The usual field limitation results from field emission due to the peak electric field.…”

Section: Introductionmentioning

confidence: 99%

Investigation of a Modified Helix Loaded Superconducting Resonator for Acceleration of Heavy Ions

Zieher

Hornung

1981

IEEE Trans. Nucl. Sci.

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A modified helix loaded cavity was developed. The design is a compromise between a rather simple construction, rigidity and small size on one hand and a reasonably good acceleration of low velocity ions on the other hand. It contains a tapered helix to reduce the ratio of peak electric to effective accelerating field to -7.1 at an optimum relative charged particle velocity of 6 = 0.092. Field measurements at room temperature have been performed as well as first measurements at 4.2 K. The rigidity of the helix was increased resulting in a typical frequency noise smaller ± 175HZpeak at the fundamental frequency of 142 MHz. The design accelerating field is 2.25 MV/m at a peak electric field of 16 MV/m leading to an optimum accelerating potential of 538 kV. In laboratory test measurements an effective accelerating field of 2.36 MV/m was achieved. This corresponds to an accelerating potential of 566 kV at a peak electric surface field of -17 MV/m.

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Section: Introductionmentioning

confidence: 99%