Abstract
We present preliminary obtained with a new spectrometer based on the Johann configuration of cylindrically bent crystals, the HIDEX. The aim of this instrument is to provide detailed line shape and shift measurements of transitions originating from high intensity laser/matter interaction, especially when matter is in extreme conditions of temperature and density. The HIDEX provides two new features. First, its alignment procedure has been improved being now based on an accurate motorized rotation stage that provides a robust and fast way to position the main components in the desired geometrical configuration. Second, there is the option to mount a Charge Coupled Device (CCD) as detector, allowing the instrument to be operated in high repetition rate laser facilities where opening the chamber migh be a critical issue. Here, we report about the test of the prototype at PALS kilo-joule laser facility, Prague, that demonstrated the new alignment procedure concept. First results are discussed.
Highlights
In the past few years, the newly developed 4th generation light sources invoked great excitement in the scientific community due to their exceptional characteristics: femtosecond pulse length, high photon energy, low divergence, high beam energy, all of these parameters contributing to the unprecedented high peak brightness, about 10 orders of magnitude higher than for the previous generation
We present preliminary obtained with a new spectrometer based on the Johann configuration of cylindrically bent crystals, the HIDEX
This is mainly due to the lack of high resolution spectroscopy ( 4000) observing warm dense matter (WDM) emission in the stringent experimental conditions required in X-ray laser facilities
Summary
In the past few years, the newly developed 4th generation light sources invoked great excitement in the scientific community due to their exceptional characteristics: femtosecond pulse length, high photon energy, low divergence, high beam energy, all of these parameters contributing to the unprecedented high peak brightness, about 10 orders of magnitude higher than for the previous generation. Diagnosis using X-ray emission spectroscopy of such matter [5] reveals a complex and rich behaviour but fine effect whose origin stems from high electron density still remains unclear. This is mainly due to the lack of high resolution spectroscopy ( 4000) observing WDM emission in the stringent experimental conditions required in X-ray laser facilities Early results are discussed before conceiving the conclusion
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