Error and jitter e ect studies on the SLED for the BEPCⅡ-linac

PEI Shi-Lun; LI Xiao-Ping; XIAO Ou-Zheng

doi:10.1088/1674-1137/36/5/014

Chinese Physics C> 2012, Vol. 36> Issue(5) : 456-463 DOI: 10.1088/1674-1137/36/5/014

Error and jitter e ect studies on the SLED for the BEPCⅡ-linac

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Abstract：
An RF pulse compressor is a device used to convert a long RF pulse to a short one with a much higher peak RF magnitude. SLED can be regarded as the earliest RF pulse compressor to be used in large-scale linear accelerators. It has been widely studied around the world and applied in the BEPC and BEPCⅡ linac for many years. During routine operation, error and jitter effects will deteriorate the performance of SLED, either on the output electromagnetic wave amplitude or phase. The error effects mainly include the frequency drift induced by cooling water temperature variation and the frequency/Q₀/β unbalances between the two energy storage cavities caused by mechanical fabrication or microwave tuning. The jitter effects refer to the PSK switching phase and time jitters. In this paper, we re-derive the generalized formulae for the conventional SLED used in the BEPCⅡ linac, and the error and jitter effects on SLED performance are also investigated.

References

[1]

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PEI Shi-Lun, LI Xiao-Ping and XIAO Ou-Zheng. Error and jitter e ect studies on the SLED for the BEPCⅡ-linac[J]. Chinese Physics C, 2012, 36(5): 456-463. doi: 10.1088/1674-1137/36/5/014

PEI Shi-Lun, LI Xiao-Ping and XIAO Ou-Zheng. Error and jitter e ect studies on the SLED for the BEPCⅡ-linac[J]. Chinese Physics C, 2012, 36(5): 456-463. doi: 10.1088/1674-1137/36/5/014 shu

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Received: 2011-08-11
Revised: 2011-08-30

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Error and jitter e ect studies on the SLED for the BEPCⅡ-linac

Received Date: 2011-08-11

Accepted Date: 2011-08-30

Available Online: 2012-05-05

Abstract: An RF pulse compressor is a device used to convert a long RF pulse to a short one with a much higher peak RF magnitude. SLED can be regarded as the earliest RF pulse compressor to be used in large-scale linear accelerators. It has been widely studied around the world and applied in the BEPC and BEPCⅡ linac for many years. During routine operation, error and jitter effects will deteriorate the performance of SLED, either on the output electromagnetic wave amplitude or phase. The error effects mainly include the frequency drift induced by cooling water temperature variation and the frequency/Q₀/β unbalances between the two energy storage cavities caused by mechanical fabrication or microwave tuning. The jitter effects refer to the PSK switching phase and time jitters. In this paper, we re-derive the generalized formulae for the conventional SLED used in the BEPCⅡ linac, and the error and jitter effects on SLED performance are also investigated.

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Error and jitter e ect studies on the SLED for the BEPCⅡ-linac

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Error and jitter e ect studies on the SLED for the BEPCⅡ-linac

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