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MOP048 |
Temporal Diagnostics Measurements with the Pulse Arrival and Length Monitor (PALM) at SACLA |
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- I. Gorgisyan, C.P. Hauri
EPFL, Lausanne, Switzerland
- I. Gorgisyan, C.P. Hauri, R. Ischebeck, P.N. Juranic, B. Monoszlai, B. Monoszlai, L. Patthey, C. Pradervand, M. Radovic, A.G. Stepanov
PSI, Villigen PSI, Switzerland
- R. Ivanov
DESY, Hamburg, Germany
- J. Liu
XFEL. EU, Hamburg, Germany
- B. Monoszlai
University of Pecs, Pécs, Hungary
- K. Ogawa, T. Togashi, M. Yabashi
RIKEN SPring-8 Center, Sayo-cho, Sayo-gun, Hyogo, Japan
- S. Owada
JASRI/RIKEN, Hyogo, Japan
- M. Yabashi
RIKEN/SPring-8, Hyogo, Japan
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The development of FEL facilities all over the world necessitates the development of temporal diagnostics for the photon pulses these facilities provide. Photon pulse length and arrival time measurements are particularly helpful for both the operators and the users of an FEL for monitoring the operation of the facility and the experiments. The development of FEL facilities all over the world necessitates the development of temporal diagnostics for the photon pulses these facilities provide. Swiss Free Electron Laser is the upcoming X-ray FEL facility at PSI, that will provide short pulsed radiation in hard X-ray region. In order to face the challenge of measuring the temporal properties of such pulses, a pulse arrival time and length monitor (PALM) is currently being developed at PSI. The concept of THz-streak camera is used to measure the arrival time relative to a beamline laser and the length of a photon pulse. A prototype version of the device was used for measurements at SACLA in order to show the feasibility of the device for photon pulses in hard X-ray region and test the reliability of the measurements. The first results from the beamtime at SACLA will be presented. The plans for further development of the system will be discussed.
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Poster MOP048 [8.009 MB]
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| THA01 |
THz Streak Camera for FELTemporal Diagnostics: Concepts and Considerations |
640 |
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- P.N. Juranic, R. Abela, I. Gorgisyan, C.P. Hauri, R. Ischebeck, B. Monoszlai, L. Patthey, C. Pradervand, M. Radovic, L. Rivkin, V. Schlott, A.G. Stepanov
PSI, Villigen PSI, Switzerland
- I. Gorgisyan, C.P. Hauri, L. Rivkin
EPFL, Lausanne, Switzerland
- R. Ivanov, P. Peier
DESY, Hamburg, Germany
- J. Liu
XFEL. EU, Hamburg, Germany
- B. Monoszlai
University of Pecs, Pécs, Hungary
- K. Ogawa, T. Togashi, M. Yabashi
RIKEN SPring-8 Center, Sayo-cho, Sayo-gun, Hyogo, Japan
- S. Owada
JASRI/RIKEN, Hyogo, Japan
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The accurate, non-destructive measurements of FEL pulse length and arrival time relative to an experimental laser are necessary for operators and users alike. The FEL operators can get a better understanding of their machine and the optics of an FEL by examining the pulse length changes of the photons coming to the user stations, and the users can use the arrival time and pulse length information to better understand their data. PSI has created the pulse arrival and length monitor (PALM) based on the THz-streak camera concept for measurement at x-ray FELs, meant to be used at the upcoming SwissFEL facility. The first results from the experimental beamtime at SACLA will be presented, showcasing the accuracy and reliability of the device. Further plans for improvement and eventual integration into SwissFEL will also be presented.
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Slides THA01 [5.798 MB]
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| THC02 |
Thermal Emittance Measurements at the SwissFEL Injector Test Facility |
970 |
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- E. Prat, S. Bettoni, H.-H. Braun, M.C. Divall, R. Ganter, C.P. Hauri, T. Schietinger, A. Trisorio, C. Vicario
PSI, Villigen PSI, Switzerland
- C.P. Hauri
EPFL, Lausanne, Switzerland
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In a laser-driven RF-gun the ultimate limit of the beam emittance is the transverse momentum of the electrons as they exit the cathode, the so-called intrinsic or thermal emittance. In this contribution we present measurements of the thermal emittance at the SwissFEL Injector Test Facility for electron beam charges down to a few tens of fC. We have studied the thermal emittance and QE dependence on the laser wavelength, the RF-gun gradient and the cathode material (Cu and Cs2Te).
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Slides THC02 [1.063 MB]
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| THA01 |
THz Streak Camera for FELTemporal Diagnostics: Concepts and Considerations |
640 |
| |
- P.N. Juranic, R. Abela, I. Gorgisyan, C.P. Hauri, R. Ischebeck, B. Monoszlai, L. Patthey, C. Pradervand, M. Radovic, L. Rivkin, V. Schlott, A.G. Stepanov
PSI, Villigen PSI, Switzerland
- I. Gorgisyan, C.P. Hauri, L. Rivkin
EPFL, Lausanne, Switzerland
- R. Ivanov, P. Peier
DESY, Hamburg, Germany
- J. Liu
XFEL. EU, Hamburg, Germany
- B. Monoszlai
University of Pecs, Pécs, Hungary
- K. Ogawa, T. Togashi, M. Yabashi
RIKEN SPring-8 Center, Sayo-cho, Sayo-gun, Hyogo, Japan
- S. Owada
JASRI/RIKEN, Hyogo, Japan
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The accurate, non-destructive measurements of FEL pulse length and arrival time relative to an experimental laser are necessary for operators and users alike. The FEL operators can get a better understanding of their machine and the optics of an FEL by examining the pulse length changes of the photons coming to the user stations, and the users can use the arrival time and pulse length information to better understand their data. PSI has created the pulse arrival and length monitor (PALM) based on the THz-streak camera concept for measurement at x-ray FELs, meant to be used at the upcoming SwissFEL facility. The first results from the experimental beamtime at SACLA will be presented, showcasing the accuracy and reliability of the device. Further plans for improvement and eventual integration into SwissFEL will also be presented.
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Slides THA01 [5.798 MB]
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| THC02 |
Thermal Emittance Measurements at the SwissFEL Injector Test Facility |
970 |
| |
- E. Prat, S. Bettoni, H.-H. Braun, M.C. Divall, R. Ganter, C.P. Hauri, T. Schietinger, A. Trisorio, C. Vicario
PSI, Villigen PSI, Switzerland
- C.P. Hauri
EPFL, Lausanne, Switzerland
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|
| |
In a laser-driven RF-gun the ultimate limit of the beam emittance is the transverse momentum of the electrons as they exit the cathode, the so-called intrinsic or thermal emittance. In this contribution we present measurements of the thermal emittance at the SwissFEL Injector Test Facility for electron beam charges down to a few tens of fC. We have studied the thermal emittance and QE dependence on the laser wavelength, the RF-gun gradient and the cathode material (Cu and Cs2Te).
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Slides THC02 [1.063 MB]
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