CERN Accelerating science

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1.
Study of double triple bend achromat (DTBA) lattice for a 3GeV light source / Alekou, Androula (DLS, JAI and Oxford University, UK) ; Bartolini, Riccardo (DLS, JAI and Oxford University, UK) ; Carmignani, Nicola (ESRF, France) ; Liuzzo, Simone Maria (ESRF, France) ; Raimondi, Pantaleo (ESRF, France) ; Pulampong, Thapakron (DLS, UK) ; Walker, Richard (DLS, UK)
Starting from the concepts of the Hybrid Multi Bend Achromat (HMBA) lattice developed at ESRF and of the Double-Double Bend Achromat(DDBA) lattice developed at Diamond, we present a new cell tha tincludes all the advantages of the two designs. The resulting Double Triple Bend Achromat(DTBA) cel lallows for a natural horizontal emittance of less than 100pm with a large dynamic aperture and lifetime. [...]
CERN-ACC-2017-0038.- Geneva : CERN, 2017 - Published in : 10.18429/JACoW-IPAC2016-WEPOW044 Fulltext: Fulltext - PDF; CERN-ACC-2017-0038 - PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.WEPOW044
2.
Overview of the Status of the Diamond Project / Walker, Richard (Diamond, Oxfordshire)
2006 - 5 p. External link: Published version from JACoW
In : 10th European Particle Accelerator Conference, Edinburgh, UK, 26 - 30 Jun 2006, pp.2718
3.
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
4.
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
5.
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
6.
A High Average Current DC GaAs Photocathode Gun for ERLs and FELs / Hernandez-Garcia, Carlos ; Benson, Stephen V ; Bullard, Don ; Dylla, Fred H ; Jordan, Kevin ; Murray, Chuck ; Neil, George R ; Shinn, Michelle D ; Siggins, Tim ; Walker, Richard L
The Jefferson Lab (JLab) 10 kW IR Upgrade FEL DC GaAs photocathode gun is presently the highest average current electron source operational in the U.S., delivering a record 9.1 mA CW, 350 kV electron beam with 122 pC/bunch at 75 MHz rep rate. Pulsed operation has also been demonstrated with 8 mA per pulse (110 pC/bunch) in 16 ms-long pulses at 2 Hz rep rate. [...]
2005 External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.3117
7.
Progress with the Diamond Light Source / Walker, Richard
2004 - 3 p. External link: Published version from JACoW
In : 9th European Particle Accelerator Conference, Lucerne, Switzerland, 5 - 9 Jul 2004, pp.2433
8.
Introduction to free-electron lasers / Walker, Richard P (speaker) (RAL Rutherford Laboratory, UK)
The Free-electron laser (FEL) is a source of coherent electromagnetic radiation based on a relativistic electron beam. First operated 25 years ago, the FEL has now reached a stage of maturity for operation in the infra-red region of the spectrum and several facilities provide intense FEL radiation beams for research covering a wide range of disciplines. [...]
Geneva : CERN, 2002 - Transparencies. CERN Academic Training Lecture, 399; Regular Lecture Programme Fulltext: PDF; Transparencies: TIF;
In : Academic Training Lectures, CERN, Geneva, Switzerland, 1 Sep 2001 - 30 Jun 2002

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