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The PolariX-TDS Project: Bead-Pull Measurements and High-Power Test on the Prototype
/ Craievich, Paolo (PSI, Villigen) ; Aßmann, Ralph (DESY) ; Bopp, Markus (PSI, Villigen) ; Braun, Hans-Heinrich (PSI, Villigen) ; Catalán Lasheras, Nuria (CERN) ; Christie, Florian (DESY) ; Citterio, Alessandro (PSI, Villigen) ; D'Arcy, Richard (DESY) ; Dorda, Ulrich (DESY) ; Foese, Manon (DESY) et al.
A collaboration between DESY, PSI and CERN has been established to develop and build an advanced modular X- band transverse deflection structure (TDS) system with the new feature of providing variable polarization of the deflecting force. The prototype of the novel X-band TDS, the Polarizable X-band (PolariX) TDS, was fabricated at PSI following the high-precision tuning-free production process developed for the C-band Linac of the SwissFEL project. [...]
2019 - 4 p.
- Published in : 10.18429/JACoW-FEL2019-WEP036
Fulltext: PDF;
In : 39th International Free Electron Laser Conference, Hamburg, Germany, 26 - 30 Aug 2019, pp.WEP036
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2.
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Review of Accelerator Limitations and Routes to Ultimate Beams
/ Zimmermann, Frank (CERN) ; Aßmann, Ralph (DESY) ; Bai, Mei (Darmstadt, GSI) ; Franchetti, Giuliano (Darmstadt, GSI)
Various physical and technology-dependent limits are encountered for key performance parameters of accelerators such as high-gradient acceleration, high-field bending, beam size, beam brightness, beam intensity and luminosity. This paper will review these limits and the associated challenges. [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 1397-1400
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.1397-1400
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4.
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Status of the Horizon 2020 EuPRAXIA conceptual design study
/ Weikum, Maria (DESY) ; Akhter, Tahmina (INFN, Naples ; U. Naples (main)) ; Alesini, David (Frascati) ; Alexandrova, Alexandra (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Anania, Maria Pia (Frascati) ; Andreev, Nikolay (Moscow, Inst. High Temp. ; Moscow, MIPT) ; Andriyash, Igor (Weizmann Inst.) ; Aschikhin, Alexander (DESY) ; Aßmann, Ralph (DESY) ; Audet, Thomas (LPGP, Orsay) et al.
The Horizon 2020 Project EuPRAXIA (European Plasma Research Accelerator with eXcellence In Applications) is producing a conceptual design report for a highly compact and cost-effective European facility with multi-GeV electron beams accelerated using plasmas. EuPRAXIA will be set up as a distributed Open Innovation platform with two construction sites, one with a focus on beam-driven plasma acceleration (PWFA) and another site with a focus on laser-driven plasma acceleration (LWFA). [...]
CERN-ACC-2019-225.-
2019 - 5 p.
- Published in : 10.18429/JACoW-IPAC2019-THPGW026
Preprint: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.THPGW026
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5.
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Sub-Femtosecond Time-Resolved Measurements Based on a Variable Polarization X-Band Transverse Deflecting Structures for SwissFEL
/ Craievich, Paolo (PSI, Villigen) ; Aßmann, Ralph (DESY) ; Bopp, Markus (PSI, Villigen) ; Braun, Hans-Heinrich (PSI, Villigen) ; Catalán Lasheras, Nuria (CERN) ; Christie, Florian (DESY) ; D'Arcy, Richard (DESY) ; Ganter, Romain (PSI, Villigen) ; Grudiev, Alexej (CERN) ; Marchetti, Barbara (DESY) et al.
The SwissFEL project, under commissioning at the Paul Scherrer Institut (PSI), will produce FEL radiation for soft and hard X-rays with pulse durations ranging from a few to several tens of femtoseconds. A collaboration between DESY, PSI and CERN has been established with the aim of developing and building an advanced X-Band transverse deflector structure (TDS) with the new feature of providing variable polarization of the deflecting force. [...]
2018 - 4 p.
- Published in : 10.18429/JACoW-FEL2017-WEP040
Fulltext: PDF;
In : 38th International Free Electron Laser Conference, Santa Fe, New Mexico, USA, 20 - 25 Aug 2017, pp.WEP040
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6.
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Status of the Polarix-TDS Project
/ Craievich, Paolo (PSI, Villigen) ; Aßmann, Ralph (DESY) ; Bopp, Markus (PSI, Villigen) ; Braun, Hans-Heinrich (PSI, Villigen) ; Catalán Lasheras, Nuria (CERN) ; Christie, Florian (DESY) ; D'Arcy, Richard (DESY) ; Dorda, Ulrich (DESY) ; Foese, Manon (DESY) ; Ganter, Romain (PSI, Villigen) et al.
A collaboration between DESY, PSI and CERN has been established to develop and build an advanced modular X-band transverse deflection structure (TDS) system with the new feature of providing variable polarization of the deflecting force. This innovative CERN design requires very high manufacturing precision to guarantee highest azimuthal symmetry of the structure to avoid the deterioration of the polarization of the streaking field. [...]
CERN-ACC-2018-157.-
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-THPAL068
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPAL068
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7.
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HORIZON 2020 EuPRAXIA Design Study
/ Walker, Paul Andreas (DESY) ; Alesini, David (Frascati) ; Alexandrova, Alexandra (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Anania, Maria Pia (Frascati) ; Andreev, Nikolay (ITAE, Moscow) ; Aßmann, Ralph (DESY) ; Audet, Thomas (LPGP, Orsay) ; Bacci, Alberto (INFN, Milan) ; Barna, Imre (Wigner RCP, Budapest) ; Beaton, Andrew (Glasgow U.) et al.
The Horizon 2020 Project EuPRAXIA ('European Plasma Research Accelerator with eXcellence In Applications') aims at producing a design report of a highly compact and cost-effective European facility with multi-GeV electron beams using plasma as the acceleration medium. The accelerator facility will be based on a laser and/or a beam driven plasma acceleration approach and will be used for photon science, high-energy physics (HEP) detector tests, and other applications such as compact X-ray sources for medical imaging or material processing. [...]
CERN-ACC-2017-252.-
2017 - 4 p.
- Published in : (2017) , pp. TUOBB3
- Published in : J. Phys.: Conf. Ser. 874 (2017) 012029
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.TUOBB3
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8.
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X-Band TDS Project
/ Marchetti, Barbara (DESY) ; Aßmann, Ralph (DESY) ; Beutner, Bolko (DESY) ; Bopp, Markus (PSI, Villigen) ; Branlard, Julien (DESY) ; Braun, Hans-Heinrich (PSI, Villigen) ; Catalán Lasheras, Nuria (CERN) ; Christie, Florian (DESY) ; Craievich, Paolo (PSI, Villigen) ; D'Arcy, Richard (DESY) et al.
Based on the success of the X-Band Transverse Deflecting Structure (TDS) diagnostic at LCLS*, a collaboration between DESY, PSI and CERN has formed with the aim of developing and building an advanced modular X-Band TDS system. The designed TDS has the new feature of providing variable polarization of the deflecting field**. [...]
CERN-ACC-2017-257.-
2017 - 4 p.
- Published in : 10.18429/JACoW-IPAC2017-MOPAB044
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.MOPAB044
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9.
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Simulations of Electron-Proton Beam Interaction before Plasma in the AWAKE Experiment
/ Dorda, Ulrich (DESY) ; Aßmann, Ralph (DESY) ; Bracco, Chiara (CERN) ; Grebenyuk, Julia (DESY) ; Petrenko, Alexey (CERN) ; Schmidt, Janet (CERN)
The on-axis injection of electron bunches in the proton-driven plasma wake at the AWAKE experiment at CERN implies co-propagation of a low-energy electron beam with the long high-energy proton beam in a common beam pipe over several meters upstream of the plasma chamber. The possible effects of the proton-induced wakefields on the electron bunch phase space in the common beam pipe region may have crucial implications for subsequent electron trapping and acceleration in plasma. [...]
CERN-ACC-2015-257.-
2015 - 4 p.
- Published in : (2015) , pp. WEPWA003
Published version from JACoW: PDF; External link: JACOW
In : 6th International Particle Accelerator Conference, Richmond, VA, USA, 3 - 8 May 2015, pp.WEPWA003
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10.
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Beam feasibility study of a collimator with in-jaw beam position monitors
/ Wollmann, Daniel (CERN) ; Nosych, Andriy A (CERN ; Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Valentino, Gianluca (CERN) ; Aberle, Oliver (CERN) ; Aßmann, Ralph W (CERN) ; Bertarelli, Alessandro (CERN) ; Boccard, Christian (CERN) ; Bruce, Roderik (CERN) ; Burkart, Florian (CERN) ; Calvo, Eva (CERN) et al.
At present, the beam-based alignment of the LHC collimators is performed by touching the beam halo with both jaws of each collimator. This method requires dedicated fills at low intensities that are done infrequently and makes this procedure time consuming. [...]
2014 - 7 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 768 (2014) 62-68
Elsevier Open Access article: PDF;
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