Commissioning simulations for the DIAMOND-II upgrade. Issue 1 (1st January 2023)

• Record Type: Journal Article
• Authors: Chao, H-C; Fielder, R; Kallestrup, J; Singh, B; Martin, I
• Is Part Of: Journal of physics. Volume 2420:Issue 1(2023)
• Publication Date: 2023-01-01
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/2420/1/012015
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: The Diamond-II [1] storage ring, compared to Diamond, improves the natural emittance from 2.7 nm to 160 pm and the beam energy from 3 to 3.5 GeV. The number of straight sections is also doubled from 24 to 48 thanks to the modified hybrid six-bend-achromat lattice. To reduce the impact on the existing science program, the dark time period must be minimised. To assist in this aim, storage ring commissioning simulations have been carried out to predict and resolve possible issues. These studies include beam commissioning starting from on-axis first-turn beam threading up to beam based alignment and full linear optics correction with stored beam. The linear optics corrections with insertion devices are also included. The machine characterisations at different stages are compared. Considerations on realistic chamber limitations, error definitions and some commissioning strategies are also discussed.