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Architectural Considerations for Recirculated and Energy-Recovered Hard XFEL Drivers
/ Douglas, David (Jefferson Lab) ; Angal-Kalinin, Deepa (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Benson, Stephen (Jefferson Lab) ; Charles, Tessa (CERN) ; Powers, Tom (Jefferson Lab) ; Roblin, Yves (Jefferson Lab) ; Satogata, Todd (Jefferson Lab) ; Tennant, Chris (Jefferson Lab) ; Thompson, Neil (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Wheelhouse, Alan (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) et al.
A confluence of events motivates discussion of design options for hard XFEL driver accelerators. Firstly, multiple superconducting radio-frequency (SRF) driven systems are now online (European XFEL), in construction (LCLS-II), or in design (MARIE); these provide increasing evidence of the transformational potential they offer for fundamental science with its concomitant benefits. [...]
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-THPMK106
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPMK106
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PERLE - Lattice Design and Beam Dynamics Studies
/ Bogacz, Alex (Jefferson Lab) ; Angal-Kalinin, Deepa (Daresbury) ; Arduini, Gianluigi (CERN) ; Bousson, Sébastien (Orsay, IPN) ; Brüning, Oliver (CERN) ; Calaga, Rama (CERN) ; Chaikovska, Iryna (Orsay, LAL) ; Douglas, David (Jefferson Lab) ; Dr Schirm, Karl-Martin (CERN) ; Gerigk, Frank (CERN) et al.
PERLE (Powerful ERL for Experiments) is a novel ERL test facility, initially proposed to validate choices for a 60 GeV ERL foreseen in the design of the LHeC and the FCC-eh. Its main thrust is to probe high current, CW, multi-pass operation with superconducting cavities at 802 MHz (and perhaps testing other frequencies of interest). [...]
CERN-ACC-2018-180.-
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-THPMK105
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPMK105
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4.
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Suppression of Multipass, Multibunch Beam Breakup in Two Pass Recirculating Accelerators
/ Tennant, Chris ; Douglas, David ; Jordan, Kevin ; Merminga, Lia ; Pozdeyev, Eduard
Beam Breakup (BBU) occurs in all accelerators at sufficiently high currents. In recirculating accelerators, such as the energy recovery linacs used for high power FELs, the maximum current has historically been limited by multipass, multibunch BBU, a form that occurs when the electron beam interacts with the high order modes (HOMs) of an accelerating cavity on one pass and then again on the second pass. [...]
2004
External link: Published version from JACoW
In : 26th International Free Electron Laser Conference and 11th FEL User Workshop 2004, Trieste, Italy, 29 Aug - 3 Sep 2004, pp.e-proc. WEBOS03
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Performance and Modeling of the JLab IR FEL Upgrade Injector
/ Hernandez-Garcia, Carlos ; Beard, Kevin ; Benson, S V ; Herman-Biallas, George ; Bullard, Don ; Douglas, David ; Dylla, Fred ; Evans, Richard ; Grippo, A ; Gubeli, Joe et al.
The JLab IR Upgrade Injector has delivered up to 9.1 mA CW of electron beam current at 9 MeV. The injector is driven by a 350 kV DC Photocathode Gun. [...]
2004
External link: Published version from JACoW
In : 26th International Free Electron Laser Conference and 11th FEL User Workshop 2004, Trieste, Italy, 29 Aug - 3 Sep 2004, pp.e-proc. TUPOS61
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7.
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High Power Lasing in the IR Upgrade FEL at Jefferson Lab
/ Benson, S V ; Beard, Kevin ; Behre, Chris ; Herman-Biallas, George ; Boyce, James ; Douglas, David ; Dylla, Fred ; Evans, Richard ; Grippo, A ; Gubeli, Joe et al.
We report on progress in commissioning the IR Upgrade facility at Jefferson Lab. Operation at high power has been demonstrated at 5.7 microns with over 4 kW of continuous power output and a recirculated electron beam power of up to 800 kW. [...]
2004
External link: Published version from JACoW
In : 26th International Free Electron Laser Conference and 11th FEL User Workshop 2004, Trieste, Italy, 29 Aug - 3 Sep 2004, pp.e-proc. TUCOS02
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Longitudinal Space Charge Effects in the JLAB IR FEL SRF Linac
/ Hernandez-Garcia, Carlos ; Beard, Kevin ; Behre, Chris ; Benson, S V ; Herman-Biallas, George ; Boyce, James ; Douglas, David ; Dylla, Fred ; Evans, Richard ; Grippo, A et al.
Observations of energy spread asymmetry when operating the Linac on either side of crest and longitudinal emittance growth have been confirmed by extending PARMELA simulations from the injector to the end of the first SRF Linac module. The asymmetry can be explained by the interaction of the accelerating electric field with that from longitudinal space charge effects within the electron bunch. [...]
2004
External link: Published version from JACoW
In : 26th International Free Electron Laser Conference and 11th FEL User Workshop 2004, Trieste, Italy, 29 Aug - 3 Sep 2004, pp.e-proc. TUBOS02
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Beam Transport Devices for the 10kW Free Electron Laser at Thomas Jefferson National Accelerator Facility
/ Dillon-Townes, Lawrence A ; Behre, Christopher ; Bevins, Michael E ; Biallas, George H ; Douglas, David ; Gould, Christopher W ; Gubeli, Joe ; Kashy, David H ; Lassiter, Ronald ; Munk, L et al.
The beam transport vacuum components for the 10 kW Free Electron Laser (FEL) at Thomas Jefferson National Accelerator Facility (TJNAF) were designed to address 10 MeV electron beam characteristics and maintain an accelerator transport vacuum of 10-9
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.1210
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