Compact spectrometer setup
In collaboration with the CNR-Institute of Photonics and Nanotechnologies in Padova, a compact and portable spectrometer has been built for real time monitoring of the fundamental and high-order harmonic contents in single-shot operation mode. Its design is based on two flat-field grazing-incidence gratings combined with a EUV-enhanced CCD.
Compact spectrometer is designed as a stand-alone unit for user experiments at the end of their setup.
Spectrometer is capable of:
- spectral and harmonic content measurements of FLASH photon beam
- working range from 1 to 25 nm
- resolution about 1000
- single shot operation mode, max at 10 Hz (only with reduced ROI of CCD detector)
- integrated multibunch mode (only with reduced intensity down to 9 orders of magnitude!)
- FLASH DAQ integrated
Technical characteristics:
- 2 variable line spacing gratings (1200 l/mm and 2400 l/mm)
- CCD detector PIXIS-XO 400B (1340x400 pixels, 20 µm pixel size, 16 bit)
- can achieve working pressure down to 10-8 mbar
CONTACT
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References:
F. Frassetto et al., Compact spectrometer for photon diagnostics of the extreme-ultraviolet free-electron-laser radiation, Nucl. Instr. and Meth. A 635, 94 - 98 (2011). Article
