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TY - CONF AU - Martin, I.P.S. AU - Brynes, A.D. AU - Christou, C. AU - Cox, M.P. AU - Fielder, R.T. AU - Jones, J.K. AU - Kallestrup, J. AU - Muratori, B.D. AU - Owen, H.L. AU - Shahveh, A. AU - Tizzano, W. ED - Liu, Lin ED - Byrd, John M. ED - Neuenschwander, Regis T. ED - Picoreti, Renan ED - Schaa, Volker R. W. TI - Progress with the Booster Design for the Diamond-II Upgrade J2 - Proc. of IPAC2021, Campinas, SP, Brazil, 24-28 May 2021 CY - Campinas, SP, Brazil T2 - International Particle Accelerator Conference T3 - 12 LA - english AB - Efficient injection into the Diamond-II storage ring [*, **] will require an emittance and bunch length substantially below the values produced from the existing booster. Whilst an earlier design for a replacement based on TME cells was able to meet the target values of <30 nm.rad and <40 ps respectively [***, ****], several technical constraints have led to a rethink of this solution. The revised booster lattice utilises a larger number of cells based on combined-function magnets with lower peak fields that still meets the emittance and bunch length goals. In addition, the new ring has been designed to have low impedance to maximise the extracted charge per shot. In this paper we describe the main features of the lattice, present the status of the engineering design and quantify the expected performance. PB - JACoW Publishing CP - Geneva, Switzerland SP - 286 EP - 289 KW - booster KW - injection KW - emittance KW - storage-ring KW - extraction DA - 2021/08 PY - 2021 SN - 2673-5490 SN - 978-3-95450-214-1 DO - doi:10.18429/JACoW-IPAC2021-MOPAB071 UR - https://jacow.org/ipac2021/papers/mopab071.pdf ER -