PARTICLE SOURCES
e-KAIO
The high-energy electron source for direct application
e-KAIO is a laser wakefield accelerator of electrons at high energy. Depending on the pulse duration of the laser driver that is used, different regimes of laser plasma interaction can be obtained:
- With a long pulse duration, the electron acceleration will be occuring in the self modulated regime giving a maxwellian spectrum with high energy cutoff.
- To obtain a quasi monoenergetic spectrum and larger cutoff energy, within the so called bubble regime, the pulse should be short. As an example, the following table recaps the optimal parameters and output in that specific regime for ~20 mJ energy in the input laser pulse.
Pulse energy : 20 mJ
Pulse optimal duration: 8.9 fs
Beam waist w0 (at focus): 4 µm
Intensity: 1.3 x 1019 W/cm2
a0: 2.5
Plasma density: 2.8 x 1019 cm-3
Electron peak energy: 53 MeV
Dephasing length: 168 µm
e-KAIO
e-KAIO is compatible with both regimes, and its paramters can be easily tuned (in particular gas jet density, and opticas focal length).
e-KAIO
Pulse optimal duration: 8.9 fs
Beam waist w0 (at focus): 4 µm
Intensity: 1.3 x 1019 W/cm2
a0: 2.5
Plasma density: 2.8 x 1019 cm-3
Electron peak energy:53 MeV
Dephasing length: 168 µm
overview of e-KAIO set up on a optical table
With e-KAIO, users have a fine control in real-time and under vacuum over all critical parameters needed for high-quality particles :
- control of the laser beam alignment in the box
- control of focal plane position
- control of focal spot quality
- control of gas jet position, density and profile
- control of electron spectral dispersion for precise diagnostics
- control of gas load for unlimited operations at kHz rep rate
Detailed specifications:
Dimensions: 500 x 900 x 450 mm3 (H x L x l)
Mass:~ 200kg
Input feedthrough: ISO-KF 80
Repetition Rate: from single shot to kHz
Electron cut-off energy: ~50MeV @20mJ laser energy (tuneable vs the laser input energy)
Charge: ~10pC/shot in the peak
Trigger: Yes (TTL signal from laser master clock)
Autonomy: several hours without human intervention
Turnover time : few minutes (e.g gas nozzle exchange)
Vacuum turbo pump: Supplied in the core offer (10-5 mbar nominal). Differential pumping in option.
Detector module: Electron scintillator + optical coupling to high dynamic range CCD
Requirements:
Laser pulse duration: Typ. femtosecond duration range (λ0~700nm-1000nm, bandwidth from 500nm to 1000nm)
Laser energy: From 2mJ to 500mJ after compressor
Laser aperture: < 50 mm
Radiation safety: Radio-protected encloser (bunker) for particle shielding
Graphic User Interface (GUI):
Details on request
No download available.
- V. Nefedova et al.,
KAIO-Beamline, the modular high repetition rate laser-plasma electron for broad range of applications
BLIN5 workshop oral video
- J. Huits et al.
Waveform Control of Relativistic Electron Dynamics in Laser-Plasma Acceleration
Phys. Rev. X 12, 011036 – 2022
- L. Rovige et al.
Demonstration of stable long-term operation of a kilohertz laser-plasma accelerator
Phys. Rev. Acc. & Beams – 23, 093401 (2020)
- Overview
-
The high-energy electron source for direct application
e-KAIO is a laser wakefield accelerator of electrons at high energy. Depending on the pulse duration of the laser driver that is used, different regimes of laser plasma interaction can be obtained:
- With a long pulse duration, the electron acceleration will be occuring in the self modulated regime giving a maxwellian spectrum with high energy cutoff.
- To obtain a quasi monoenergetic spectrum and larger cutoff energy, within the so called bubble regime, the pulse should be short. As an example, the following table recaps the optimal parameters and output in that specific regime for ~20 mJ energy in the input laser pulse.
Pulse energy : 20 mJ
Pulse optimal duration: 8.9 fs
Beam waist w0 (at focus): 4 µm
Intensity: 1.3 x 1019 W/cm2
a0: 2.5
Plasma density: 2.8 x 1019 cm-3
Electron peak energy: 53 MeV
Dephasing length: 168 µm
e-KAIO
e-KAIO is compatible with both regimes, and its paramters can be easily tuned (in particular gas jet density, and opticas focal length).
e-KAIO
Pulse optimal duration: 8.9 fs
Beam waist w0 (at focus): 4 µm
Intensity: 1.3 x 1019 W/cm2
a0: 2.5
Plasma density: 2.8 x 1019 cm-3
Electron peak energy:53 MeV
Dephasing length: 168 µm
overview of e-KAIO set up on a optical table
With e-KAIO, users have a fine control in real-time and under vacuum over all critical parameters needed for high-quality particles :
- control of the laser beam alignment in the box
- control of focal plane position
- control of focal spot quality
- control of gas jet position, density and profile
- control of electron spectral dispersion for precise diagnostics
- control of gas load for unlimited operations at kHz rep rate
- Specifications
-
Detailed specifications:
Dimensions: 500 x 900 x 450 mm3 (H x L x l)
Mass:~ 200kg
Input feedthrough: ISO-KF 80
Repetition Rate: from single shot to kHz
Electron cut-off energy: ~50MeV @20mJ laser energy (tuneable vs the laser input energy)
Charge: ~10pC/shot in the peakTrigger: Yes (TTL signal from laser master clock)
Autonomy: several hours without human intervention
Turnover time : few minutes (e.g gas nozzle exchange)
Vacuum turbo pump: Supplied in the core offer (10-5 mbar nominal). Differential pumping in option.
Detector module: Electron scintillator + optical coupling to high dynamic range CCDRequirements:
Laser pulse duration: Typ. femtosecond duration range (λ0~700nm-1000nm, bandwidth from 500nm to 1000nm)
Laser energy: From 2mJ to 500mJ after compressor
Laser aperture: < 50 mm
Radiation safety: Radio-protected encloser (bunker) for particle shieldingGraphic User Interface (GUI):
Details on request
- Downloads
-
No download available.
- Publications
-
- V. Nefedova et al.,
KAIO-Beamline, the modular high repetition rate laser-plasma electron for broad range of applications
BLIN5 workshop oral video
- J. Huits et al.
Waveform Control of Relativistic Electron Dynamics in Laser-Plasma Acceleration
Phys. Rev. X 12, 011036 – 2022
- L. Rovige et al.
Demonstration of stable long-term operation of a kilohertz laser-plasma accelerator
Phys. Rev. Acc. & Beams – 23, 093401 (2020)
- V. Nefedova et al.,