Note: Absolute calibration of two DRZ phosphor screens using ultrashort electron bunch

Wu, Yiching; Zhu, Biao; Dong, Ke Gong; Yan, Yong Hong; Gu, Yuqiu

doi:10.1063/1.3681442

Cited by 29 publications

(22 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Simulations show that the energy deposition of the electrons inside the photo-luminescent layer is almost independent of their kinetic energy above a threshold value of 3 MeV. 16,19,22,23 Additionally, Nakamura et al 21 demonstrated that the sensitivity of Lanex Fast to highly relativistic electrons has only a weak dependency of the electron energy. It decreases by 1% per 100 MeV increase of the electron energy.…”

Section: Methodsmentioning

confidence: 99%

Calibration and cross-laboratory implementation of scintillating screens for electron bunch charge determination

Kurz

Couperus

Krämer

et al. 2018

Review of Scientific Instruments

View full text Add to dashboard Cite

We revise the calibration of scintillating screens commonly used to detect relativistic electron beams with low average current, e.g., from laser-plasma accelerators, based on new and expanded measurements that include higher charge density and different types of screens than previous work [Buck et al., Rev. Sci. Instrum. 81, 033301 (2010)]. Electron peak charge densities up to 10 nC/mm 2 were provided by focused picosecond-long electron beams delivered by the Electron Linac for beams with high Brilliance and low Emittance (ELBE) at the Helmholtz-Zentrum Dresden-Rossendorf. At low charge densities, a linear scintillation response was found, followed by the onset of saturation in the range of nC/mm 2. The absolute calibration factor (photons/sr/pC) in this linear regime was measured to be almost a factor of 2 lower than that reported by Buck et al. retrospectively implying a higher charge in the charge measurements performed with the former calibration. A good agreement was found with the results provided by Glinec et al. [Rev. Sci. Instrum. 77, 103301 (2006)]. Furthermore long-term irradiation tests with an integrated dose of approximately 50 nC/mm 2 indicate a significant decrease of the scintillation efficiency over time. Finally, in order to enable the transfer of the absolute calibration between laboratories, a new constant reference light source has been developed.

show abstract

Section: Methodsmentioning

confidence: 99%

Calibration and cross-laboratory implementation of scintillating screens for electron bunch charge determination

Kurz

Couperus

Krämer

et al. 2018

Review of Scientific Instruments

View full text Add to dashboard Cite

show abstract

“…In order to estimate the energy of the dispersed electron beams, knowledge of the undeflected path is required, which was obtained from the correlation between the electron beam pointing (recorded without a magnet) on two phosphor screens (phosphor 1 and phosphor 2). The electron beam charge was estimated using standard calibration data available for the various phosphor screens used [33][34][35].…”

Section: Experimental Setup and Generationmentioning

confidence: 99%

Electron radiography with different beam parameters using laser plasma accelerator

Hazra

Mishra

Moorti

et al. 2019

Phys. Rev. Accel. Beams

View full text Add to dashboard Cite

An experimental study on the radiography of various metallic and biological plant samples with a minimum resolution of ∼75 μm using relativistic electron beams from the laser plasma accelerator is presented. Electron beams were generated from the interaction of Ti:sapphire laser pulses of 120 fs duration with underdense plasma of 4 mm length, created using Ar and He gas jets, with two different parameters, i.e., a maximum energy of ∼50 MeV (broad spectrum) and a quasimonoenergetic beam with a peak energy of ∼150 MeV. GEANT4 Monte Carlo simulations were performed to reconstruct the radiographic images and were found to be consistent with the experimental results. Radiography of biological plant samples was also performed, and in this regard penetration depths of two types of electron beams in adipose tissue were estimated through a simulation. The effect of different electron beam parameters on the quality of the radiograph has been discussed.

show abstract

“…The low-energy cutoff of the electron spectrometer was 10 MeV. The electron beam charge was estimated using the absolute calibration data of the phosphor screen [13]. The electron beam profile and the pointing variation were measured by moving the magnet out from the path of the electron beam.…”

mentioning

confidence: 99%

High-quality stable electron beams from laser wakefield acceleration in high density plasma

Rao

Moorti

Rathore

et al. 2014

Phys. Rev. ST Accel. Beams

View full text Add to dashboard Cite

High-quality, stable electron beams are produced from self-injected laser wakefield acceleration using the interaction of moderate 3 TW, 45 fs duration Ti:sapphire laser pulses with high density (>5 × 10 19 cm −3 ) helium gas jet plasma. The electron beam has virtually background-free quasimonoenergetic distribution with energy 35.6 þ3.9 −2.5 MeV, charge 3.8 þ2.8 −1.2 pC, divergence and pointing variation ∼10 mrad. The stable and high quality of the electron beam opens an easy way for applications of the laser wakefield accelerator in the future, particularly due to the widespread availability of sub-10 TW class lasers with a number of laser plasma laboratories around the world.

show abstract

Note: Absolute calibration of two DRZ phosphor screens using ultrashort electron bunch

Cited by 29 publications

References 13 publications

Calibration and cross-laboratory implementation of scintillating screens for electron bunch charge determination

Calibration and cross-laboratory implementation of scintillating screens for electron bunch charge determination

Electron radiography with different beam parameters using laser plasma accelerator

High-quality stable electron beams from laser wakefield acceleration in high density plasma

Contact Info

Product

Resources

About