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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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2.
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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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3.
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Publication
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4.
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Compensation of orbit distortion due to quadrupole motion using feed-forward control at KEK ATF
/ Bett, D R (CERN) ; Charrondière, C (CERN) ; Patecki, M (CERN) ; Pfingstner, J (CERN) ; Schulte, D (CERN) ; Tomás, R (CERN) ; Jeremie, A (Annecy, LAPP) ; Kubo, K (KEK, Tsukuba ; Tsukuba, Graduate U. Adv. Studies) ; Kuroda, S (KEK, Tsukuba ; Tsukuba, Graduate U. Adv. Studies) ; Naito, T (KEK, Tsukuba ; Tsukuba, Graduate U. Adv. Studies) et al.
The high luminosity requirement for a future linear collider sets a demanding limit on the beam quality at the Interaction Point (IP). One potential source of luminosity loss is the motion of the ground itself. [...]
2018 - 9 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 895 (2018) 10-18
Fulltext: PDF;
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5.
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Stabilization of the arrival time of a relativistic electron beam to the 50 fs level
/ Roberts, J. (JAI, UK ; CERN) ; Skowronski, P. (CERN) ; Burrows, P.N. (JAI, UK) ; Christian, G.B. (JAI, UK) ; Corsini, R. (CERN) ; Ghigo, A. (Frascati) ; Marcellini, F. (Frascati) ; Perry, C. (JAI, UK)
We report the results of a low-latency beam phase feed-forward system built to stabilize the arrival time of a relativistic electron beam. The system was operated at the Compact Linear Collider (CLIC) Test Facility (CTF3) at CERN where the beam arrival time was stabilized to approximately 50 fs. [...]
arXiv:1802.03220.-
2018-01-09 - 5 p.
- Published in : Phys. Rev. Accel. Beams: 21 (2018) , no. 1, pp. 011001
Fulltext: 10.1103_PhysRevAccelBeams.21.011001 - PDF; arXiv:1802.03220 - PDF;
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6.
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First Experimental Results with the CLIC Drive Beam Phase Feedforward Prototype at the CLIC Test Facility CTF3
/ Christian, Glenn B (JAI, UK) ; Andersson, Alexandra (CERN) ; Burrows, Philip (JAI, UK ; Oxford U.) ; Corsini, Roberto (CERN) ; Ghigo, Andrea (LNF, Dafne Light) ; Marcellini, Fabio (LNF, Dafne Light) ; Perry, Colin (JAI, UK ; Oxford U.) ; Roberts, Jack (CERN ; JAI, UK) ; Skowroński, Piotr (CERN)
The two-beam acceleration scheme envisaged for CLIC will require a high degree of phase stability between two beams at the drive beam decelerator sections, to allow efficient acceleration of the main beam. There will be up to 48 such decelerator sections for the full 3 TeV design, and each decelerator section will be instrumented with a feed-forward system to correct the drive beam phase to a precision of 0.2 degrees at 12 GHz relative to the main beam, using a kicker system around a four-bend chicane. [...]
2016 - 4 p.
- Published in : 10.18429/JACoW-IBIC2015-MOPB063
Fulltext: PDF;
In : International Beam Instrumentation Conference , Melbourne, Australia, 13 - 17 Sep 2015, pp.MOPB063
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ebook
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The FONT5 Bunch-by-Bunch Position and Angle Feedback System at ATF2
/ Apsimon, R J (Oxford U., JAI) ; Bett, D R (Oxford U., JAI) ; Burrows, P N (Oxford U., JAI) ; Christian, G B (Oxford U., JAI) ; Constance, B (Oxford U., JAI ; CERN) ; Davis, M R (Oxford U., JAI) ; Gerbershagen, A (Oxford U., JAI ; CERN) ; Perry, C (Oxford U., JAI) ; Resta-Lopez, J (Valencia U., IFIC)
The FONT5 upstream beam-based feedback system at ATF2 is designed to correct the position and angle jitter at the entrance to the ATF2 final-focus system, and also to demonstrate a prototype intra-train feedback system for the International Linear Collider interaction point. We discuss the hardware, from stripline BPMs to kickers, and RF and digital signal processing, as well as presenting results from the latest beam tests at ATF2..
2012 - 9 p.
- Published in : Phys. Procedia 37 (2012) 2063-2071
Elsevier Open Access article: PDF;
In : 2nd International Conference on Technology and Instrumentation in Particle Physics, Chicago, IL, USA, 9 - 14 Jun 2011, pp.2063-2071
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9.
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Design, Hardware Tests and First Results From the CLIC Drive Beam Phase Feed-Forward Prototype at CTF3
/ Roberts, Jack (CERN ; Oxford U., JAI) ; Andersson, Alexandra (CERN) ; Skowronski, Piotr K (CERN) ; Burrows, Philip N (Oxford U., JAI) ; Christian, Glenn B (Oxford U., JAI) ; Perry, Colin (Oxford U., JAI) ; Ghigo, Andrea (INFN, LNS) ; Marcellini, Fabio (INFN, LNS)
In the CLIC two beam acceleration concept the phase synchronisation between the main beam and the RF power extracted from the drive beam must be maintained to within 0.2 degrees of 12 GHz. A drive beam phase feed-forward system with bandwidth above 17.5 MHz is required to reduce the drive beam phase jitter to this level. [...]
CERN-ACC-2014-406.-
2014 - 3 p.
- Published in : (2014) , pp. MOPP033
Fulltext: PDF; External link: JACoW server
In : 27th Linear Accelerator Conference, Geneva, Switzerland, 31 Aug - 5 Sep 2014, pp.MOPP033
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10.
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Study of Transverse Pulse-to-Pulse Orbit Jitter at the KEK Accelerator Test Facility 2 (ATF2)
/ Resta-Lopez, J (Valencia U., IFIC) ; Alabau-Gonzalvo, J (Valencia U., IFIC) ; Bett, D R (Oxford U., JAI) ; Burrows, P N (Oxford U., JAI) ; Christian, G B (Oxford U., JAI) ; Davis, M R (Oxford U., JAI) ; Perry, C (Oxford U., JAI) ; Apsimon, R (CERN) ; Constance, B (CERN) ; Gerbershagen, A (CERN)
For future linear colliders the precise control and mitigation of pulse-to-pulse orbit jitter will be very important to achieve the required luminosity. Diagnostic techniques for the orbit jitter measurement and correction for multibunch operation are being addressed at the KEK Accelerator Test Facility 2 (ATF2) [...]
2012 - 3 p.
- Published in : Conf. Proc.: C1205201 (2012) , pp. MOPPR066
External link: Published from JaCoW
In : 3rd International Particle Accelerator Conference, New Orleans, LA, USA, 20 - 25 May 2012, pp.936-938
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