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ATF2-3 hardware upgrade and new experimental results to maximize luminosity potential of linear colliders
/ Faus-Golfe, Angeles (IJCLab, Orsay) ; Aryshev, Alexander (KEK, Tsukuba) ; Lyapin, Alexey (Oxford U.) ; Kruchinin, Konstantin (KEK, Tsukuba) ; Terunuma, Nobuhiro (KEK, Tsukuba) ; Fuster-Martinez, Nuria (Valencia U., IFIC) ; Burrows, Philip (Oxford U.) ; Mazzoni, Stefano (CERN) ; Okugi, Toshiyuki (KEK, Tsukuba)
/ATF2 Collaboration
The ATF2-3 beamline is the only facility in the world for testing the Final Focus Beamline of linear colliders and is essential for the ILC and the CLIC projects. A vertical electron beam size of 41 nm (within 10% of the target), a closed-loop intra-bunch feedback of latency 133 ns, and direct stabilization of the beam position at the Interaction Point to 41 nm (limited by IP BPM resolution) have all been achieved at ATF2. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) TUPC04
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.TUPC04
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2.
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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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3.
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An FPGA-based Bunch-by-Bunch Position and Angle Feedback System at ATF2
/ Christian, G B (Oxford U., JAI) ; Apsimon, R J (Oxford U., JAI) ; Bett, D R (Oxford U., JAI) ; Burrows, P N (Oxford U., JAI) ; Constance, B (Oxford U., JAI) ; Davis, M R (Oxford U., JAI) ; Gerbershagen, A (Oxford U., JAI) ; Perry, C (Oxford U., JAI) ; Resta Lopez, J (Valencia U.,IFIC)
The FONT5 intra-train feedback system serves as a prototype for an interaction point beam-based feedback system for future electron-positron colliders, such as the International Linear Collider. The system has been tested on the KEK Accelerator Test Facility (ATF) and is deployed to stabilise the beam orbit at the ATF2. [...]
2011
- Published in : Conf. Proc.: C11-05-16.4 (2011) , pp. MOPD80
Published version from JACoW: PDF;
In : 10th European Workshop on Beam Diagnostics and Instrumentation for Particle Accelerators, Hamburg, Germany, 16 - 18 May 2011, pp.233
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4.
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A superconducting magnet upgrade of the ATF2 final focus
/ Parker, B (Brookhaven) ; Anerella, M (Brookhaven) ; Escallier, J (Brookhaven) ; He, P (Brookhaven) ; Jain, P (Brookhaven) ; Marone, A (Brookhaven) ; Wanderer, P (Brookhaven) ; Wu, KC (Brookhaven) ; Hauviller, C (CERN) ; Marin, E (CERN) et al.
The ATF2 facility at KEK is a proving ground for linear collider technology with a well instrumented extracted beam line and Final Focus (FF). The primary ATF2 goal is to demonstrate the extreme beam demagnification and spot stability needed for a linear collider FF [1]. [...]
CERN-ATS-2010-046.-
Geneva : CERN, 2010 - 3 p.
Fulltext: PDF; External link: Published version from JACoW
In : 1st International Particle Accelerator Conference, Kyoto, Japan, 23 - 28 May 2010, pp.WEPE041
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5.
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Contribution of Optical Aberrations to Spot-size Increase with Bunch Intensity at ATF2
/ Patecki, Marcin (CERN ; Warsaw U. of Tech.) ; Kubo, Kiyoshi (KEK, Tsukuba) ; Kuroda, Shigeru (KEK, Tsukuba) ; Naito, Takashi (KEK, Tsukuba) ; Okugi, Toshiyuki (KEK, Tsukuba) ; Tauchi, Toshiaki (KEK, Tsukuba) ; Terunuma, Nobuhiro (KEK, Tsukuba) ; Tomás, Rogelio (CERN) ; White, Glen (SLAC) ; Zimmermann, Frank (CERN)
A primary goal of ATF2 (Accelerator Test Facility) is to demonstrate a low vertical beam size at the interaction point (IP) of about 37 nm. Measurements over the past years indicate that the ATF2 vertical beam size strongly rises with bunch intensity. [...]
CERN-ACC-2015-324.-
2015 - 4 p.
- Published in : (2015) , pp. MOPJE065
Published version from JACoW: PDF; External link: JACOW
In : 6th International Particle Accelerator Conference, Richmond, VA, USA, 3 - 8 May 2015, pp.MOPJE065
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6.
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Performance of Nanometre-Level Resolution Cavity Beam Position Monitors and Their Application in an Intra-Train Beam Position Feedback System
/ Blaskovic Kraljevic, Neven (JAI, UK) ; Bambade, Philip (Orsay, LAL) ; Bett, Douglas (CERN) ; Bromwich, Talitha (JAI, UK) ; Burrows, Philip (JAI, UK) ; Christian, Glenn (JAI, UK) ; Jang, Si-Won (Korea U.) ; Perry, Colin (JAI, UK) ; Ramjiawan, Rebecca (JAI, UK) ; Tauchi, Toshiaki (KEK, Tsukuba) et al.
A system of three low-Q cavity beam position monitors (BPMs), installed in the interaction point (IP) region of the Accelerator Test Facility (ATF2) at KEK, has been designed and optimised for nanometre-level beam position resolution. The BPMs have been used to provide an input to a low-latency, intra-train beam position feedback system consisting of a digital feedback board and a custom stripline kicker with power amplifier. [...]
2017 - 4 p.
- Published in : 10.18429/JACoW-IBIC2016-TUPG16
Fulltext: PDF;
In : International Beam Instrumentation Conference, Barcelona, Spain, 11 - 15 Sep 2016, pp.TUPG16
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7.
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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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8.
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Design and high order optimization of the ATF2 lattices
/ Marin, E (SLAC) ; White, G (SLAC) ; Woodley, M (SLAC) ; Kubo, K (KEK, Tsukuba) ; Okugi, T (KEK, Tsukuba) ; Tauchi, T (KEK, Tsukuba) ; Urakawa, J (KEK, Tsukuba) ; Tomas, R (CERN)
The next generation of future linear colliders (LC) demands nano-meter beam sizes at the interaction point (IP) in order to reach the required luminosity. The final focus system (FFS) of a LC is meant to deliver such small beam sizes. [...]
2013
Published version from JACoW: PDF;
In : North American Particle Accelerator Conference, Pasadena, CA, USA, 29 Sep - 04 Oct 2013, pp.574-576
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9.
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Tests of Wakefield-Free Steering at ATF2
/ Latina, Andrea (CERN) ; Adli, Erik (U. Oslo (main)) ; Fuster-Martínez, Nuria (Valencia U., IFIC) ; Pfingstner, Juergen (CERN) ; Schulte, Daniel (CERN) ; Snuverink, Jochem (Royal Holloway, U. of London)
Charge-dependent effects on the orbit and on the beam size affect the performance of the Accelerator Test Facility (ATF2) in a non-negligible way. Until now small beam sizes have only been achieved running with a beam charge significantly smaller than the nominal value. [...]
CERN-ACC-2015-327.-
2015 - 4 p.
- Published in : (2015) , pp. MOPJE059
Published version from JACoW: PDF; External link: JACOW
In : 6th International Particle Accelerator Conference, Richmond, VA, USA, 3 - 8 May 2015, pp.MOPJE059
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10.
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ATF2 COMMISSIONING
/ Seryi, A (SLAC) ; Christian, G (ATOMKI, Debrecen) ; Parker, B (Brookhaven) ; Schulte, D (CERN) ; Delahaye, J P (CERN) ; Tomas, R (CERN) ; Zimmermann, F (CERN) ; Wolski, A (Cockcroft Inst.) ; Elsen, E (DESY) ; Sanuki, T (Tohoku Univ.) et al.
WP: 9: Technology for normal conducting higher energy linear accelerators
Task: 9.3: Linac & FF Stabilization
ATF2 is a final-focus test beam line that aims to focus the low-emittance beam from the ATF damping ring to a beam size of about 37 nm, and at the same time to demonstrate nm beam stability, using numerous advanced beam diagnostics and feedback tools. [...]
EuCARD-CON-2009-018.
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2010.
Access to fulltext document - Published version from PAC09
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