Beam impedance minimization for accelerator beamline insertion devices

Journal article

Use of complex state-of-the art detectors and monitors is essential to carry out high-energy and nuclear physics experiments at accelerator/collider facilities. The detectors are used to monitor charged particle beam parameters at large accelerator facilities such as coherent light sources and to develop new state-of-the art accelerators. Improvements in beam quality and lifetime necessitate the advancement of the instrumentation for successful operation of the accelerator facilities. Minimization of the beam-line-inserted devices’ influence on the beam is therefore one of the essential considerations during the design of such facilities and the preparation of experiments. In this paper, we suggest and discuss a roadmap to minimize this influence. It is developed using fundamental concepts and numerical modeling, and we show that this is a multi-stage and multi-parametric problem that needs careful consideration. To illustrate the roadmap, the vacuum vessel for the vertex locator detector (CERN) is used. The results are discussed and, using them, the steps and stages of the design optimization are suggested. The suggested procedure can be applied to optimize the design of any beamline insertion device and will contribute to the development of next generation particle/accelerator detectors and monitors.

Authors: Konoplev, OV; Posthuma De Boer, DW; Warsop, C; John, M

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: AIP Publishing
• Journal: Review of Scientific Instruments
• Volume: 91
• Issue: 7
• Article number: 074711
• Publication date: 2020-07-21
• Acceptance date: 2020-06-01
• DOI: 10.1063/5.0007449
• EISSN: 1089-7623
• ISSN: 0034-6748
• Language: English
• Keywords: FFR