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HL-LHC BPM electronics development as a case study for direct digitization and integrated processing techniques in accelerator instrumentation
/ Degl'Innocenti, Irene (CERN) ; Boccardi, Andrea (CERN) ; Bett, Douglas (JAI, UK) ; Krupa, Michal (CERN)
The technological evolution of analog-to-digital and digital-to-analog converters increases the amount of data that can be processed in the digital domain. Therefore, direct digitization enables many advanced signal processing techniques and is attracting more and more attention in the field of accelerator instrumentation. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) THPL089
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.THPL089
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HL-LHC BPM System Development Status
/ Krupa, Michal (CERN) ; Bett, Douglas (U. Oxford (main)) ; Degl'Innocenti, Irene (CERN) ; Gudkov, Dmitry (CERN) ; Schneider, Gerhard (CERN)
The demanding instrumentation requirements of the future High Luminosity LHC (HL-LHC) require 44 newly designed Beam Position Monitors (BPM) to be installed around the ATLAS and CMS experiments in 2026-2028. Three BPM types are now in pre-series production, with two more variants under design. [...]
2022 - 5 p.
- Published in : JACoW IBIC 2022 (2022) 408-412
Fulltext: PDF;
In : 11th International Beam Instrumentation Conference (IBIC 2022), Cracow, Poland, 11 - 15 Sep 2022, pp.408-412
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High-resolution, low-latency, bunch-by-bunch feedback system for nanobeam stabilization
/ Bett, D.R. (JAI, UK ; CERN) ; Blaskovic Kraljevic, N. (JAI, UK ; Lund U., MAX-lab) ; Bromwich, T. (JAI, UK ; Edinburgh U.) ; Burrows, P.N. (JAI, UK) ; Christian, G.B. (JAI, UK ; Diamond Light Source) ; Perry, C. (JAI, UK) ; Ramjiawan, R. (JAI, UK ; CERN)
We report the design, operation and performance of a high-resolution, low-latency, bunch-by-bunch feedback system for nano-beam stabilisation. The system employs novel, ultra-low quality-factor cavity beam position monitors (BPMs), a two-stage analogue signal down-mixing system, and a digital signal processing and feedback board incorporating an FPGA. [...]
arXiv:2201.01531.-
2022-02-01 - 14 p.
- Published in : Phys. Rev. Accel. Beams 25 (2022) 022801
Fulltext: Publication - PDF; 2201.01531 - PDF;
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Simulation Studies of Intra-Train, Bunch-by-Bunch Feedback Systems at the International Linear Collider
/ Ramjiawan, Rebecca (JAI, UK ; CERN) ; Bett, Douglas (JAI, UK ; CERN) ; Bodenstein, Ryan (Jefferson Lab ; JAI, UK) ; Burrows, Philip (JAI, UK) ; Christian, Glenn (Diamond Light Source ; JAI, UK) ; Perry, Colin (JAI, UK)
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. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 861-864
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.861-864
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Signal Processing Architecture for the HL-LHC Interaction Region BPMs
/ Bett, Douglas R (Oxford U.) ; Boccardi, Andrea (CERN) ; Degl'Innocenti, Irene (CERN) ; Krupa, Michal (CERN)
In the HL-LHC era, the Interaction Regions around the ATLAS and CMS experiments will be equipped with 24 new Beam Position Monitors (BPM) measuring both counter-propagating beams in a common vacuum chamber. Numerical simulations proved that, despite using new high-directivity stripline BPMs, the required measurement accuracy cannot be guaranteed without bunch-by-bunch disentanglement of the signals induced by both beams. [...]
JACoW, 2021 - 4 p.
- Published in : JACoW IBIC 2021 (2021) 100-103
Fulltext: PDF;
In : 10th International Beam Instrumentation Conference (IBIC 2021), Online, Korea, 13 - 17 Sep 2021, pp.100-103
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A High-Resolution, Low-Latency, Bunch-by-Bunch Feedback System for Nano-Beam Stabilization
/ Ramjiawan, Rebecca (JAI, UK) ; Bett, Douglas (JAI, UK) ; Blaskovic Kraljevic, Neven (ESS, Lund) ; Bromwich, Talitha (Edinburgh U.) ; Burrows, Philip N (JAI, UK) ; Christian, Glenn B (Diamond Light Source) ; Perry, Colin (JAI, UK)
A low-latency, bunch-by-bunch feedback system employing high-resolution cavity Beam Position Monitors (BPMs) has been developed and tested at the Accelerator Test Facility (ATF2) at the High Energy Accelerator Research Organization (KEK), Japan. The feedback system was designed to demonstrate nanometer-level vertical stabilization at the focal point of the ATF2 and can be operated using either a single BPM to provide local beam stabilization, or by using two BPMs to stabilize the beam at an intermediate location. [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 1378-1381
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.1378-1381
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A Sub-Micron Resolution, Bunch-by-Bunch Beam Trajectory Feedback System and Its Application to Reducing Wakefield Effects in Single-Pass Beamlines
/ Bett, Douglas R (Oxford U.) ; Burrows, Philip N (Oxford U.) ; Kubo, Kiyoshi (KEK, Tsukuba) ; Okugi, Toshiyuki (KEK, Tsukuba) ; Perry, Colin (Oxford U.) ; Ramjiawan, Rebecca (Oxford U.) ; Terunuma, Nobuhiro (KEK, Tsukuba)
A high-precision intra-bunch-train beam orbit feedback correction system has been developed and tested at the KEK Accelerator Test Facility, ATF2. The system uses the vertical position of the bunch measured at two beam position monitors to calculate a pair of kicks which are applied to the next bunch using two upstream kickers, thereby correcting both the vertical position and trajectory angle. [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 1382-1385
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.1382-1385
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ATF report 2020
/ Aryshev, Alexander (KEK, High Energy Accelerator Research Organization (Japan)) ; Bambade, Philip (Université Paris-Saclay (FR)) ; Bett, Douglas Robert (University of Oxford (GB)) ; Brunetti, Laurent (Centre National de la Recherche Scientifique (FR)) ; Burrows, Philip Nicholas (University of Oxford (GB)) ; Cilento, Vera (Université Paris-Saclay (FR)) ; Faus-Golfe, Angeles (Université Paris-Saclay (FR)) ; Karataev, Pavel (University of London (GB)) ; Korysko, Pierre (University of Oxford (GB)) ; Kiyoshi, Kubo (KEK, High Energy Accelerator Research Organization (Japan)) et al.
The KEK accelerator test faciliry (ATF) conducts R&D on a beam for the Linear Collider. [...]
CERN-ACC-2020-0029.
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2020. - 77 p.
Full text
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