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RIS citation export for THPO039: The Status of CSNS Front End

TY  - CONF
AU  - Li, H.
AU  - Cao, X.
AU  - Chen, W.
AU  - Fu, S.
AU  - Huang, T.
AU  - Liu, S.
AU  - Lv, Y.J.
AU  - Ouyang, H.F.
AU  - Xiao, Y.C.
AU  - Xue, K.
ED  - Pei, Guoxi
ED  - Schaa, Volker RW
ED  - Chin, Yong Ho
ED  - Fu, Shinian
ED  - Zhao, Ning
TI  - The Status of CSNS Front End
J2  - Proc. of LINAC2018, Beijing, China, 16-21 September 2018
CY  - Beijing, China
T2  - Linear Accelerator Conference
T3  - 29
LA  - english
AB  - CSNS front end is currently under running, which consists of a H⁻ penning ion source(IS), a low energy beam transport(LEBT), a radio frequency quadrupole (RFQ) and a medium energy beam transport(MEBT). CSNS ion source is a type of Penning surface plasma source, similar to ISIS ion source. Cesium is used to enhance the H⁻ ion production efficiency. The ion source is running with duty factor of 1.25%(25Hz and 500us). Normally, 40mA H⁻ beam from ion source with 50keV can be delivered into LEBT. Three solenoids and two direction magnets are employed to transport and match the beam from the ion source into the RFQ. The pre-chopper is installed at the end of LEBT. The chopper mainly works at 3.8-4.2 kV and 1 MHz rate, which is about the RF frequency of the ring at injection. The rise time is less than 10ns,which fulfills the requirement of ring injection. For the RFQ, it is a 324MHz 4-vane type with a output energy of 3.0MeV and the length of 3.62m. The input cavity power is about 400kW. During commissioning, 16mA H⁻ beam can be obtained at the exit of RFQ, and the RFQ transmission rate is up to 94%.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 771
EP  - 773
KW  - rfq
KW  - ion-source
KW  - emittance
KW  - MMI
KW  - operation
DA  - 2019/01
PY  - 2019
SN  - 2226-0366
SN  - 978-3-95450-194-6
DO  - DOI: 10.18429/JACoW-LINAC2018-THPO039
UR  - http://jacow.org/linac2018/papers/thpo039.pdf
ER  -