HIAT2015 - List of Authors (Okumura, S.)

Paper	Title	Page
MOPA11	Phase Bunching in the Central Region of the JAEA AVF Cyclotron for Heavy-Ion Acceleration in the Third-Harmonic Mode	62
	N. Miyawaki, H. Kashiwagi, S. Kurashima, S. Okumura JAEA/TARRI, Gunma-ken, Japan M. Fukuda RCNP, Osaka, Japan
	Phase bunching using a rising slope of a dee-voltage at the first acceleration gap was evaluated by analysis of a simplified geometric trajectory analysis model and the measurement of the internal beam phase distribution for the acceleration harmonic number (h) 3 to accelerate the heavy ion in the JAEA AVF cyclotron. The calculated correlation between the internal beam phase and the initial beam phase by the model was consistent with the measurement result of the beam phase distributions with the initial beam phase, defined by adjusting the relative RF phase of the beam buncher. The measured correlation indicated that the initial beam phase width larger than 60 RF degrees was compressed to less than 15 RF degrees, and the internal beam phase was independent of the initial beam phase. The phase bunching effect was almost equal to that for h = 2 with different geometric electrode from h = 3 in the central region.
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Paper

Title

Page

Phase Bunching in the Central Region of the JAEA AVF Cyclotron for Heavy-Ion Acceleration in the Third-Harmonic Mode

62

N. Miyawaki, H. Kashiwagi, S. Kurashima, S. Okumura
JAEA/TARRI, Gunma-ken, Japan
M. Fukuda
RCNP, Osaka, Japan

Phase bunching using a rising slope of a dee-voltage at the first acceleration gap was evaluated by analysis of a simplified geometric trajectory analysis model and the measurement of the internal beam phase distribution for the acceleration harmonic number (h) 3 to accelerate the heavy ion in the JAEA AVF cyclotron. The calculated correlation between the internal beam phase and the initial beam phase by the model was consistent with the measurement result of the beam phase distributions with the initial beam phase, defined by adjusting the relative RF phase of the beam buncher. The measured correlation indicated that the initial beam phase width larger than 60 RF degrees was compressed to less than 15 RF degrees, and the internal beam phase was independent of the initial beam phase. The phase bunching effect was almost equal to that for h = 2 with different geometric electrode from h = 3 in the central region.

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reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text, ※ RIS/RefMan, ※ EndNote (xml)