TY  - CONF
AU  - Li, C.L.
AU  - Chao, A.
AU  - Feng, C.
AU  - Jiang, B.C.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Lattice Design for the Reversible SSMB
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - Steady State Microbunching (SSMB) aiming at producing high average power radiation in the electron storage ring has been proposed by Ratner and Chao years ago. Reversible seeding scheme is one of the promising scenarios with less challenges on the storage ring lattice design. The key problem for reversible SSMB is the precise cancelation of the laser modulation which will allow producing turn-by-turn coherent radiation without spoiling the transverse emittances and energy spread. In this paper the lattice design for the microbunching generation and its cancelation will be presented. Also a storage ring lattice design will be shown.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 1507
EP  - 1509
KW  - radiation
KW  - electron
KW  - emittance
KW  - storage-ring
KW  - bunching
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-TUPGW045
UR  - http://jacow.org/ipac2019/papers/tupgw045.pdf
ER  - 

TY  - CONF
AU  - Phimsen, T.
AU  - Jiang, B.C.
AU  - Juntong, N.
AU  - Sudmuang, P.
AU  - Zhao, Z.T.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Improvement of Touschek Lifetime by Higher Harmonic RF Cavity in the SPS Storage Ring
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - Siam Photon Source (SPS), located at Nakhon Ratchasima, Thailand, is a synchrotron light source with the beam energy of 1.2 GeV. User operation is performed in beam decay mode with the maximum current of 150 mA. Beam lifetime is about 12 hours at the beam current of 100 mA. Beam injection is carried out twice a day, and even with full energy, it takes roughly 30 minutes. Beam lifetime in the SPS storage ring is limited by Touschek scattering and strongly depends on operation conditions. Higher harmonic RF cavity is a proven method to increase the beam lifetime and suppressing coupled bunch instabilities through Landau damping effect. If the beam lifetime is increased for examples, to be double, only one injection per day would be needed. In this study, an improvement of Touschek lifetime by passive harmonic RF cavity is investigated.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 1669
EP  - 1672
KW  - cavity
KW  - storage-ring
KW  - operation
KW  - synchrotron
KW  - scattering
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-TUPGW110
UR  - http://jacow.org/ipac2019/papers/tupgw110.pdf
ER  -