Simulation Studies of Intra-Train, Bunch-by-Bunch Feedback Systems at the International Linear Collider

Conference · Wed Jun 01 04:00:00 EDT 2022

DOI:https://doi.org/10.18429/JACoW-IPAC2022-TUPOST011· OSTI ID:1905112

Ramjiawan, R. L. ^[1]; Bett, D. R. ^[2]; Burrows, P. ^[1]; Perry, C. ^[1]; Bodenstein, R. M. ^[3]; Christian, G. B. ^[4]

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1. JAI, Oxford, United Kingdom
2. JAI, Oxford, United Kingdom; CERN, Meyrin, Switzerland
3. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
4. DLS, Oxfordshire, United Kingdom

The International Linear Collider (ILC) is a proposed electron-positron collider targeting collision energies from 250 GeV to 1 TeV. With design luminosities of order 10³⁴ cm²s⁻¹, a beam-based, intra-train feedback system would be required near the Interaction Point (IP) to provide nanometre-level stabilisation of the beam overlap in the collisions. Here we present results from beam-tracking simulations of the 500 GeV ILC, including the impact of beam-trajectory imperfections on the luminosity, and the capability of the IP feedback system to compensate for them. Effects investigated include the position jitter introduced by the damping ring extraction kicker, short-range and long-range wakefields, and ground motion. The feedback system was shown to be able to correct for beam-beam offsets of up to 200 nm and stabilise the collision overlap to the nanometre level, within a few bunch crossings.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1905112
• Report Number(s): JLAB-ACP-22-3702; DOE/OR/23177-5659
• Country of Publication: United States
• Language: English