Paper |
Title |
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WEPAB122 |
Experimental Demonstration of Ballistic Bunching with Dielectric-Lined Waveguides at Pitz |
2857 |
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- F. Lemery
University of Hamburg, Hamburg, Germany
- G.A. Amatuni, B. Grigoryan
CANDLE, Yerevan, Armenia
- P. Boonpornprasert, Y. Chen, J.D. Good, M. Krasilnikov, O. Lishilin, G. Loisch, S. Philipp, H.J. Qian, Y. Renier, F. Stephan
DESY Zeuthen, Zeuthen, Germany
- P. Piot
Fermilab, Batavia, Illinois, USA
- P. Piot
Northern Illinois University, DeKalb, Illinois, USA
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We report on the experimental demonstration of ballistic bunching of photoinjected, nC-scale electron bunches at the PITZ facility. In the experiment, electron bunches emanating from the photocathode were directly focused into a mm-scale dielectric-lined waveguide. The wakefield excited by the bunch acts back onto itself, leading to an energy modulation, which at a relatively low energy of 6~MeV, is converted into a density modulation before entering the linac ∼ 1~m downstream. We discuss the basic theory, experimental layout and results.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2017-WEPAB122
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MOPAB016 |
Beam Diagnostic and Control Systems for AREAL 50 MeV Linac |
114 |
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- V. Sahakyan, G.A. Amatuni, A. Azatyan, B. Grigoryan, N. Martirosyan, A. Sargsyan, V.M. Tsakanov, G.S. Zanyan
CANDLE SRI, Yerevan, Armenia
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Advanced Research Electron Accelerator Laboratory (AREAL) is an electron linear accelerator project with a laser driven RF gun that has been constructed at CANDLE Synchrotron Research Institute. After the completion of the first phase, which implies the operation of a 5 MeV gun section, the second phase of facility development (energy enhancement up to 50 MeV) is in progress. In the present paper the description of corresponding upgrades for diagnostic and control systems is given.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2017-MOPAB016
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TUPAB020 |
AREAL 50 MeV Electron Accelerator Project for THz and Middle IR FEL |
1355 |
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- G.A. Amatuni, Z.G. Amirkhanyan, V.S. Avagyan, A. Azatyan, V. Danielyan, H. Davtyan, S.G. Dekhtiarov, N. Ghazaryan, B. Grigoryan, L. Hakobyan, M. Ivanyan, V.G. Khachatryan, E.M. Laziev, T. Markosyan, N. Martirosyan, Sh.A. Mehrabyan, T. Melkumyan, T.H. Mkrtchyan, V.H. Petrosyan, V. Sahakyan, A. Sargsyan, A.S. Simonyan, A.V. Tsakanian, V.M. Tsakanov, A. Vardanyan, Ta.S. Vardanyan, T.L. Vardanyan, V. V. Vardanyan, A.S. Yeremyan, G.S. Zanyan
CANDLE SRI, Yerevan, Armenia
- P.S. Manukyan
SEUA, Yerevan, Armenia
- A.V. Tsakanian
HZB, Berlin, Germany
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Advanced Research Electron Accelerator Laboratory (AREAL) is an electron accelerator project based on photo cathode RF gun. First phase of the facility is a 5 MeV energy RF photogun, which is currently under operation. The facility development implies energy upgrade to 50 MeV with further delivery of the electron beam to the undulator sections for Free Electron Laser and coherent undulator radiation generation in MIR and THz frequency ranges respectively. In this report the design study of AREAL 50 MeV facility main systems along with the beam dynamics and characteristics of expected radiation are presented.
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DOI • |
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※ https://doi.org/10.18429/JACoW-IPAC2017-TUPAB020
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TUPAB021 |
The Study of Focus-Dependent Dark Current for AREAL RF Photogun |
1358 |
SUSPSIK021 |
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- L. Hakobyan, H. Davtyan, B. Grigoryan, A. Vardanyan
CANDLE SRI, Yerevan, Armenia
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AREAL (Advanced Research Electron Accelerator Laboratory) is a project of linear accelerator based facility aimed to produce ultra-short electron bunches with small emittance. In the first phase of AREAL project an electron beam with energy up to 5 MeV is produced by the electron RF photogun and used for irradiation experiments in biology, microelectronics and accelerator technology development. For such experiments the exact calculation of absorbed dose and electron bunch peak current is one of important conditions. The presence of a dark current in electron gun affects the electron emission from photocathode, the exact absorbed dose calculation, and in general harms the machine performance. In this paper the estimation of dark current amount, produced in the electron gun, the ways to avoid its influence on experiments are discussed. The dark current measurements are compared with the simulation results. The electron beam separation from a dark current is discussed.
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※ https://doi.org/10.18429/JACoW-IPAC2017-TUPAB021
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THPIK014 |
Travelling Wave Accelerating Structure for Areal 50 MeV Energy Upgrade |
4130 |
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- A. Vardanyan, V. Danielyan, S.G. Dekhtiarov, B. Grigoryan, L. Hakobyan, T. Markosyan, A.S. Simonyan
CANDLE SRI, Yerevan, Armenia
- W. Ackermann
TEMF, TU Darmstadt, Darmstadt, Germany
- A.V. Tsakanian
HZB, Berlin, Germany
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AREAL facility development implies energy upgrade to 50 MeV in order to drive a THz free electron laser. To reach this goal, the installation of two 1.6 m long S-Band travelling wave accelerating sections, with nominal accel-erating gradient of 15 MV/m, are foreseen. In this paper the design study of accelerating sections along with the matching performance of RF couplers are presented. The simulations are performed using the CST Microwave Studio. The first results of the accelerating structure proto-type fabrication are discussed.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2017-THPIK014
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