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Experimental Verification Towards Feed-Forward Ground Motion Mitigation at ATF2
/ Pfingstner, Juergen (CERN) ; Artoos, Kurt (CERN) ; Charrondière, Cedric (CERN) ; Janssens, Stef (CERN) ; Patecki, Marcin (CERN) ; Renier, Yves (CERN) ; Schulte, Daniel (CERN) ; Tomás, Rogelio (CERN) ; Jeremie, Andrea ; Kubo, Kiyoshi et al.
Without counter measures, ground motion effects would deteriorate the performance of future linear colliders to an unacceptable level. An envisioned new ground motion mitigation method (based on feed-forward control) has the potential to improve the performance and to reduce the system cost compared to other proposed methods. [...]
CERN-ACC-2014-388.-
2014 - 4 p.
- Published in : (2014) , pp. MOPP032
Fulltext: PDF; External link: JACoW server
In : 27th Linear Accelerator Conference, Geneva, Switzerland, 31 Aug - 5 Sep 2014, pp.MOPP032
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2.
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Ground Motion Compensation using Feed-forward Control at ATF2
/ Bett, Douglas (CERN) ; Charrondière, Cedric (CERN) ; Jeremie, Andrea (Annecy, LAPP) ; Kubo, Kiyoshi (KEK, Tsukuba) ; Kuroda, Shigeru (KEK, Tsukuba) ; Naito, Takashi (KEK, Tsukuba) ; Okugi, Toshiyuki (KEK, Tsukuba) ; Patecki, Marcin (CERN) ; Pfingstner, Juergen (CERN) ; Schulte, Daniel (CERN) et al.
Ground motion compensation using feed-forward control is a novel technique being developed to combat beam imperfections resulting from the vibration-induced misalignment of beamline components. The method is being evaluated experimentally at the KEK Accelerator Test Facility 2 (ATF2). [...]
CERN-ACC-2016-206.-
2016 - 3 p.
- Published in : 10.18429/JACoW-IPAC2016-WEPOR005
Published version from JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.WEPOR005
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3.
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Improving the Performance of an Orbit Feed-forward Based on Quadrupole Motion at the KEK ATF
/ Bett, Douglas (CERN) ; Burrows, Philip (JAI, Oxford) ; Charrondière, Cedric (CERN) ; Christian, Glenn (JAI, Oxford) ; Jeremie, Andrea (Annecy, LAPP) ; Kubo, Kiyoshi (KEK, Tsukuba) ; Kuroda, Shigeru (KEK, Tsukuba) ; Naito, Takashi (KEK, Tsukuba) ; Okugi, Toshiyuki (KEK, Tsukuba) ; Patecki, Marcin (CERN) et al.
The high luminosity requirement for a future linear collider sets a demanding limit on the beam quality at the Interation Point (IP). Even the natural motion of the ground could misalign the quadrupole magnets to such an extent that the resulting dipole kicks would require compensation. [...]
CERN-ACC-2017-249.-
2017 - 4 p.
- Published in : 10.18429/JACoW-IPAC2017-TUPIK097
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.TUPIK097
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4.
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Active Vibration Isolation System for CLIC Final Focus
/ Balik, Gael (Annecy, LAPP) ; Allemandou, Nicolas (Annecy, LAPP) ; Allibe, Julie (Annecy, LAPP) ; Baud, Jean Philippe (Annecy, LAPP) ; Brunetti, Laurent (Annecy, LAPP) ; Deleglise, Guillaume (Annecy, LAPP) ; Jeremie, Andrea (Annecy, LAPP) ; Vilalte, Sebastien (Annecy, LAPP) ; Caron, Bernard (Savoie U.) ; Hernandez, Camilo (Savoie U.)
With pinpoint accuracy, the next generation of Linear Collider such as CLIC will collide electron and positron beams at a centre of mass energy of 3 TeV with a desired peak luminosity of 2*1034 cm⁻²s^{−1}. One of the many challenging features of CLIC is its ability to collide beams at the sub-nanometer scale at the Interaction Point (IP). [...]
2014 - 3 p.
- Published in : , pp. TUPRI088
Fulltext: PDF; External link: Published version from JACoW
In : 5th International Particle Accelerator Conference, Dresden, Germany, 15 - 20 Jun 2014, pp.TUPRI088
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5.
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6.
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Mitigation of ground motion effects in linear accelerators via feed-forward control
/ Pfingstner, J (CERN) ; Artoos, K (CERN) ; Charrondiere, C (CERN) ; Janssens, St (CERN) ; Patecki, M (CERN) ; Renier, Y (CERN) ; Schulte, D (CERN) ; Tomás, R (CERN) ; Jeremie, A (Annecy, LAPP) ; Kubo, K (Sokendai, Tsukuba ; KEK, Tsukuba) et al.
Ground motion is a severe problem for many particle accelerators, since it excites beam oscillations, which decrease the beam quality and create beam-beam offset (at colliders). Orbit feedback systems can only compensate ground motion effects at frequencies significantly smaller than the beam repetition rate. [...]
2014 - 14 p.
- Published in : Phys. Rev. Spec. Top. Accel. Beams 17 (2014) 122801
APS Open Access article: PDF;
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7.
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Status of the CLIC-UK R&D; Programme on Design of Key Systems for the Compact Linear Collider
/ Burrows, Philip (Oxford U., JAI) ; Ainsworth, Robert (Oxford U., JAI) ; Aumeyr, Thomas (Oxford U., JAI) ; Bett, Douglas (Oxford U., JAI) ; Blaskovic Kraljevic, Neven (Oxford U., JAI) ; Bobb, Lorraine (Oxford U., JAI) ; Boogert, Stewart (Oxford U., JAI) ; Bosco, Alessio (Oxford U., JAI) ; Christian, Glenn (Oxford U., JAI) ; Corner, Laura (Oxford U., JAI) et al.
Six UK institutes are engaged in a collaborative R&D; programme with CERN aimed at demonstrating key aspects of technology feasibility for the Compact Linear Collider (CLIC). We give an overview and status of the R&D; being done on: 1) Drive-beam components: quadrupole magnets and the beam phase feed-forward prototype. [...]
2014 - 4 p.
- Published in : , pp. TUPME008
Fulltext: PDF; External link: Published version from JACoW
In : 5th International Particle Accelerator Conference, Dresden, Germany, 15 - 20 Jun 2014, pp.TUPME008
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8.
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Fulltext
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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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