Photon diagnostics at the FLASH THz beamline
Abstract
The THz beamline at FLASH, DESY, provides both tunable (1–300 THz) narrow-bandwidth (∼10%) and broad-bandwidth intense (up to 150 uJ) THz pulses delivered in 1 MHz bursts and naturally synchronized with free-electron laser X-ray pulses. Combination of these pulses, along with the auxiliary NIR and VIS ultrashort lasers, supports a plethora of dynamic investigations in physics, material science and biology. The unique features of the FLASH THz pulses and the accelerator source, however, bring along a set of challenges in the diagnostics of their key parameters: pulse energy, spectral, temporal and spatial profiles. Here, these challenges are discussed and the pulse diagnostic tools developed at FLASH are presented. In particular, a radiometric power measurement is presented that enables the derivation of the average pulse energy within a pulse burst across the spectral range, jitter-corrected electro-optical sampling for the full spectro-temporal pulse characterization, spatial beam profiling along the beam transport line and at the sample, and a lamellar grating based Fourier transform infrared spectrometer for the on-line assessment of the average THz pulse spectra. Corresponding measurement results provide a comprehensive insight into the THz beamline capabilities.
- Authors:
-
- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
- Institute of Physics Belgrade, Belgrade (Serbia)
- Vinca Institute of Nuclear Sciences, Belgrade (Serbia); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
- S. P. Pune Univ., Pune (India)
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Elettra – Sincrotrone Trieste SCpA, Trieste (Italy)
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden (Germany)
- European XFEL, Schenefeld (Germany)
- German Aerospace Center (DLR), Berlin (Germany); Technical Univ. of Berlin, Berlin (Germany)
- Publication Date:
- Research Org.:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1528873
- Grant/Contract Number:
- AC02-76SF00515
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Synchrotron Radiation (Online)
- Additional Journal Information:
- Journal Name: Journal of Synchrotron Radiation (Online); Journal Volume: 26; Journal Issue: 3; Journal ID: ISSN 1600-5775
- Publisher:
- International Union of Crystallography
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION; FLASH; intense THz; THz diagnostic; electro-optic; FTIR
Citation Formats
Pan, Rui, Zapolnova, Ekaterina, Golz, Torsten, Krmpot, Aleksandar J., Rabasovic, Mihailo D., Petrovic, Jovana, Asgekar, Vivek, Faatz, Bart, Tavella, Franz, Perucchi, Andrea, Kovalev, Sergey, Green, Bertram, Geloni, Gianluca, Tanikawa, Takanori, Yurkov, Mikhail, Schneidmiller, Evgeny, Gensch, Michael, and Stojanovic, Nikola. Photon diagnostics at the FLASH THz beamline. United States: N. p., 2019.
Web. doi:10.1107/s1600577519003412.
Pan, Rui, Zapolnova, Ekaterina, Golz, Torsten, Krmpot, Aleksandar J., Rabasovic, Mihailo D., Petrovic, Jovana, Asgekar, Vivek, Faatz, Bart, Tavella, Franz, Perucchi, Andrea, Kovalev, Sergey, Green, Bertram, Geloni, Gianluca, Tanikawa, Takanori, Yurkov, Mikhail, Schneidmiller, Evgeny, Gensch, Michael, & Stojanovic, Nikola. Photon diagnostics at the FLASH THz beamline. United States. https://doi.org/10.1107/s1600577519003412
Pan, Rui, Zapolnova, Ekaterina, Golz, Torsten, Krmpot, Aleksandar J., Rabasovic, Mihailo D., Petrovic, Jovana, Asgekar, Vivek, Faatz, Bart, Tavella, Franz, Perucchi, Andrea, Kovalev, Sergey, Green, Bertram, Geloni, Gianluca, Tanikawa, Takanori, Yurkov, Mikhail, Schneidmiller, Evgeny, Gensch, Michael, and Stojanovic, Nikola. Fri .
"Photon diagnostics at the FLASH THz beamline". United States. https://doi.org/10.1107/s1600577519003412. https://www.osti.gov/servlets/purl/1528873.
@article{osti_1528873,
title = {Photon diagnostics at the FLASH THz beamline},
author = {Pan, Rui and Zapolnova, Ekaterina and Golz, Torsten and Krmpot, Aleksandar J. and Rabasovic, Mihailo D. and Petrovic, Jovana and Asgekar, Vivek and Faatz, Bart and Tavella, Franz and Perucchi, Andrea and Kovalev, Sergey and Green, Bertram and Geloni, Gianluca and Tanikawa, Takanori and Yurkov, Mikhail and Schneidmiller, Evgeny and Gensch, Michael and Stojanovic, Nikola},
abstractNote = {The THz beamline at FLASH, DESY, provides both tunable (1–300 THz) narrow-bandwidth (∼10%) and broad-bandwidth intense (up to 150 uJ) THz pulses delivered in 1 MHz bursts and naturally synchronized with free-electron laser X-ray pulses. Combination of these pulses, along with the auxiliary NIR and VIS ultrashort lasers, supports a plethora of dynamic investigations in physics, material science and biology. The unique features of the FLASH THz pulses and the accelerator source, however, bring along a set of challenges in the diagnostics of their key parameters: pulse energy, spectral, temporal and spatial profiles. Here, these challenges are discussed and the pulse diagnostic tools developed at FLASH are presented. In particular, a radiometric power measurement is presented that enables the derivation of the average pulse energy within a pulse burst across the spectral range, jitter-corrected electro-optical sampling for the full spectro-temporal pulse characterization, spatial beam profiling along the beam transport line and at the sample, and a lamellar grating based Fourier transform infrared spectrometer for the on-line assessment of the average THz pulse spectra. Corresponding measurement results provide a comprehensive insight into the THz beamline capabilities.},
doi = {10.1107/s1600577519003412},
journal = {Journal of Synchrotron Radiation (Online)},
number = 3,
volume = 26,
place = {United States},
year = {Fri Apr 26 00:00:00 EDT 2019},
month = {Fri Apr 26 00:00:00 EDT 2019}
}
Web of Science
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Works referencing / citing this record:
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