Chinese Physics C > 2003, Vol. 27 > Issue(6): 551-554

Tuning and Measuring of RFQ with Resonantly Coupled Segments

OUYANG Hua-Fu^,,
FU Shi-Nian

Institute of High Energy Physics, CAS, Beijing 100039, China

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Abstract：
Tuning and measuring on a 3-meter aluminum RFQ cold model with three resonantly coupled segments is carried out, RF electric field distribution with flatness better than 4 percent is obtained. The reason for the formation of RF electric distribution steps at the location of coupling cells is described, and the relation of the step size and the local resonant frequency difference between the two sides of coupling cell is also given. With this relation, the RF electric field distribution steps at the location of coupling cells can be removed in one tuning operation. The best tuning procedure is finally determined. Following this procedure, the tuning of RFQ with several resonantly coupled segments is easy and fast.

References

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[15]	FU Shi-Nian. Study on the Field Tuning Method of a Resonantly Coupled RFQ. Chinese Physics C, 2002, 26(8): 870-875.
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OUYANG Hua-Fu and FU Shi-Nian. Tuning and Measuring of RFQ with Resonantly Coupled Segments[J]. Chinese Physics C, 2003, 27(6): 551-554.

OUYANG Hua-Fu and FU Shi-Nian. Tuning and Measuring of RFQ with Resonantly Coupled Segments[J]. Chinese Physics C, 2003, 27(6): 551-554. shu

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Received: 2002-08-16
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Tuning and Measuring of RFQ with Resonantly Coupled Segments

OUYANG Hua-Fu^,
FU Shi-Nian

Corresponding author:OUYANG Hua-Fu,

Institute of High Energy Physics, CAS, Beijing 100039, China

Received Date:2002-08-16
Accepted Date:1900-01-01
Available Online:2003-06-05

Abstract:Tuning and measuring on a 3-meter aluminum RFQ cold model with three resonantly coupled segments is carried out, RF electric field distribution with flatness better than 4 percent is obtained. The reason for the formation of RF electric distribution steps at the location of coupling cells is described, and the relation of the step size and the local resonant frequency difference between the two sides of coupling cell is also given. With this relation, the RF electric field distribution steps at the location of coupling cells can be removed in one tuning operation. The best tuning procedure is finally determined. Following this procedure, the tuning of RFQ with several resonantly coupled segments is easy and fast.