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SUMMARY:Focusing system of synchrotron radiation with refractive mosaic le
 nses for the station “Extreme state of matter” of the VEPP-4
DTSTART;VALUE=DATE-TIME:20200713T143000Z
DTEND;VALUE=DATE-TIME:20200713T143100Z
DTSTAMP;VALUE=DATE-TIME:20260419T135918Z
UID:indico-contribution-1862@indico.inp.nsk.su
DESCRIPTION:Speakers: Alexandr Berdyugin (INP)\nThe purpose of the work is
  to create a system for focusing synchrotron radiation for the station “
 Extreme state of matter” on a VEPP-4 [1]. For experiments at this statio
 n\, there is a problem of insufficient radiation intensity\, which worsens
  the statistics in fast processes experiments with an exposure time of dif
 fraction patterns of 100 ps [2\, 3\, 4\, 5\, 6]. This problem can be solve
 d through the use of refractive focusing optics made of a polymer (epoxy r
 esin SU-8). An x-ray mosaic lens was chosen for focusing [7]. The system m
 akes it possible to focus SR into a smaller spot by increasing the radiati
 on intensity and allowing realizing a local structural analysis. The follo
 wing tasks were solved:\n1) the mechanical precision parts of the detector
  alignment and fastening system are designed and manufactured\;\n2) a cont
 rol program for the adjustment device is designed\;\n3) a calculation was 
 made of the heat absorption on the lens and its heating under monochromati
 c and polychromatic radiation using the ANSYS program\;\n4) the system is 
 installed and debugged on the channel No. 8 VEPP-4\;\n5) an experiment was
  conducted to focus synchrotron radiation on a monochromatic beam.\nIn the
  experiment it was shown that the lens stably works on monochromatic radia
 tion\, but it heats up strongly (heating rate of 17 deg / s) on polychroma
 tic radiation. A scheme of the pulsed operation of the lens (active interv
 al of 100 ms) for the study of fast-flowing processes on polychromatic rad
 iation is proposed.\nThis work was supported by RFBR grant 19-29-12045 and
  Ministry of Science and Education of Russia grant AAAA-A17-117030310280-6
 .\n\n1.	Tolochko B.P\, Kosov A.V.\, Evdokov O.V.\, Zhogin I.L.\,Ten K.A.\,
  Pruuel E.R.\, Shekchtman L.I.\, Aulchenko V.M.\, Zhulanov V.V.\, Piminov 
 P.F.\, Nazmov V.P.\, Zolotarev K.Vb \, Kulipanov G.N.  The synchrotron rad
 iation beamline 8-b at VEPP-4 collider for SAXS\, WAXS and micro tomograph
 y investigation of fast processes at extreme condition of high temperature
  and pressure with nanosecond time resolution. Physics  Procedia    84   (
  2016 )   427  –  433\n2.	Aulchenko\, V.M.\, Zhulanov\, V.V.\, Kulipanov
 \, G.N.\, Ten\, K.A.\, Tolochko\, B.P.\, Shekhtman\, L.I.Investigations of
  fast processes by X-ray diffraction methods at the Siberian Synchrotron a
 nd Terahertz Radiation Center(2018) Physics-Uspekhi\, 61 (6)\, pp. 515-530
 . \n3.	Pruuel\, E.R.\, Ten\, K.A.\, Tolochko\, B.P.\, Merzhievskii\, L.A.\
 , Luk'Yanchikov\, L.A.\, Aul'Chenko\, V.M.\, Zhulanov\, V.V.\, Shekhtman\,
  L.I.\, Titov\, V.M. Implementation of the capability of synchrotron radia
 tion in a study of detonation processes(2013) Doklady Physics\, 58 (1)\, p
 p. 24-28. \n4.	Arakcheev A.S.\, Aulchenko V.M.\, Balash I.I.\, Burdakov A.
 V.\, Chernyakin A.D.\, Dokutovich V.A.\, Evdokov O.V.\, Kasatov A.A.\, Kaz
 antsev S.R.\, Kosov A.V.\, Popov V.A.\, Sharafutdinov M.R.\, Shekhtman L.I
 .\, Shoshin A.A.\, Tolochko B.P.\, Vasilyev A.A.\, Vyacheslavov L.N.\, Vai
 gel L.A.\, Zhulanov V.V. Dynamic observation of X-ray Laue diffraction on 
 single-crystal tungsten during pulsed heat load.\nJournal of Synchrotron R
 adiation. 2019. Vol. 26. P. \n5.	Aulchenko V.\, Shekhtman L.\, Zhulanov V.
 \, Tolochko B.\, Pruuel E.\, Ten K. Development of the microstrip silicon 
 detector for imaging of fast processes at a synchrotron radiation beam.\nN
 uclear Instruments and Methods in Physics Research. Section A: Accelerator
 s\, Spectrometers\, Detectors and Associated Equipment. 2017. Vol. 845. P.
  169-172.\n6.	Arakcheev A.\, Aulchenko V.\, Kudashkin D.\, Shekhtman L.\, 
 Tolochko B.\, Zhulanov V. Development of a silicon microstrip detector wit
 h single photon sensitivity for fast dynamic diffraction experiments at a 
 synchrotron radiation beam.\nJournal of Instrumentation. 2017. Vol. 12. P.
  C06002.\n7.	Nazmov V.P.\, Tolochko B.P. Patent RF 2572045.\n\nhttps://ind
 ico.inp.nsk.su/event/24/contributions/1862/
LOCATION:
URL:https://indico.inp.nsk.su/event/24/contributions/1862/
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