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SUMMARY:High resolution monochromator for synchrotron radiation based on f
 lat VLS-gratings
DTSTART;VALUE=DATE-TIME:20200713T141700Z
DTEND;VALUE=DATE-TIME:20200713T141800Z
DTSTAMP;VALUE=DATE-TIME:20260416T213405Z
UID:indico-contribution-1869@indico.inp.nsk.su
DESCRIPTION:Speakers: Alexey Shatokhin ()\nWe present the design of a high
 -resolution plane-VLS-grating soft X-ray and VUV monochromator of synchrot
 ron radiation for the 125 – 4200 Å spectral range. A concave mirror is 
 located at a distance of 28 m from a synchrotron radiation source. The mir
 ror is set in a highly asymmetric scheme and focuses radiation at a distan
 ce of about 1350 mm. The VLS-grating is set close to the mirror and focuse
 s onto the exit slit the radiation diffracted in the first external order.
  The frequency is scanned by rotation of only the plane VLS grating. Two r
 eplaceable VLS-gratings with line densities of 600 1/mm and 150 1/mm are p
 lanned for the 125 – 1000 Å and 900 – 4200 Å spectral ranges\, respe
 ctively. The ruled area of the VLS gratings is 40x20 mm. The gratings and 
 the mirror each operate for a deviation angle of 32˚\, the total deviatio
 n angle being equal to zero. The resolving power obtained by numerical ray
  tracing is higher than 2000 in the entire spectral range. This work was p
 artially supported by RFBR grant No.19-12-50059\n\nhttps://indico.inp.nsk.
 su/event/24/contributions/1869/
LOCATION:
URL:https://indico.inp.nsk.su/event/24/contributions/1869/
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