Pulsed sextupole injection for Beijing Advanced Photon Source with ultralow emittance

JIAO Yi; XU Gang

doi:10.1088/1674-1137/37/11/117005

Chinese Physics C> 2013, Vol. 37> Issue(11) : 117005 DOI: 10.1088/1674-1137/37/11/117005

Pulsed sextupole injection for Beijing Advanced Photon Source with ultralow emittance

JIAO Yi ,
XU Gang

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Abstract：
In this paper we present the physical design of the pulsed sextupole injection system for Beijing Advanced Photon Source (BAPS) with an ultralow emittance. The BAPS ring lattice is designed in such a way that two options of pulsed sextupole injection are allowed,i.e.,with septum and pulsed sextupole in different drift spaces or in the same drift space. We give the magnetic parameters of the injection system and the optimal condition of the optical functions for both options. In addition,we find that the pulsed sextupole induces position-dependent dispersive effect and causes a non-ignorable effect on the injection efficiency in a storage ring with a relatively small acceptance,which should be well considered.

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JIAO Yi and XU Gang. Pulsed sextupole injection for Beijing Advanced Photon Source with ultralow emittance[J]. Chinese Physics C, 2013, 37(11): 117005. doi: 10.1088/1674-1137/37/11/117005

JIAO Yi and XU Gang. Pulsed sextupole injection for Beijing Advanced Photon Source with ultralow emittance[J]. Chinese Physics C, 2013, 37(11): 117005. doi: 10.1088/1674-1137/37/11/117005 shu

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Received: 2013-01-14
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沈阳化工大学材料科学与工程学院沈阳 110142

Pulsed sextupole injection for Beijing Advanced Photon Source with ultralow emittance

Received Date: 2013-01-14

Accepted Date: 1900-01-01

Available Online: 2013-11-05

Abstract: In this paper we present the physical design of the pulsed sextupole injection system for Beijing Advanced Photon Source (BAPS) with an ultralow emittance. The BAPS ring lattice is designed in such a way that two options of pulsed sextupole injection are allowed,i.e.,with septum and pulsed sextupole in different drift spaces or in the same drift space. We give the magnetic parameters of the injection system and the optimal condition of the optical functions for both options. In addition,we find that the pulsed sextupole induces position-dependent dispersive effect and causes a non-ignorable effect on the injection efficiency in a storage ring with a relatively small acceptance,which should be well considered.

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Pulsed sextupole injection for Beijing Advanced Photon Source with ultralow emittance

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