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SUMMARY:4 MeV ENERGY PROTONS FOCUSING BY DIELECTRIC CAPILLARY IN THE AIR
DTSTART;VALUE=DATE-TIME:20220715T130000Z
DTEND;VALUE=DATE-TIME:20220715T132000Z
DTSTAMP;VALUE=DATE-TIME:20260912T203322Z
UID:indico-contribution-296@events.sinp.msu.ru
DESCRIPTION:Speakers: K. E. Kantserova (Sarov Physics and Technology Insti
 tute of the National Research Nuclear University MEPhI)\, I. A. Karpov (Ru
 ssian Federal Nuclear Center – All-Russian Research Institute of Experim
 ental Physics)\nA classical method of the charge particle microbeams forma
 tion is based on magnetic or electrostatic ion focusing with preliminary i
 nput beam collimation. An alternative method of the microbeams formation i
 s using of the capillary. New systems of transformation\, control and tran
 sfer of the charged particle beams can be developed on a basis of this eff
 ect\, particularly for obtaining the micron and submicron-sized beams whic
 h are interested for elemental and structure analysis\, nanolithography\, 
 medical and biological applications\, radiation technologies [1-3]. This m
 ethod is the easiest and cheapest one for using in comparing with the exis
 ting micron radiation methods.\nExperimental studies of transfer and focus
 ing processes of the 4 MeV initial energy proton beam are carried out. For
  proton beam transportation into the air the SterilleFemtotips 11 dielectr
 ic capillary with 58 mm length (din = 1\,5 mm\, dout = 92 ± 3 mu-m\; din 
 = 1\,5 mm\, dout = 0\,5 ± 0\,2 mu-m) are used. EGP-10 accelerator [4] is 
 used as a proton source.\nThe optimal distances from capillary to research
  object are determined as well as time when the least divergence of the be
 am is observed. Proton energetic spectra are obtained after passing of the
  protons through the capillary with and without the conductive layer. The 
 method of the beam size determination using the semiconductor detector is 
 proposed. Proton beam sizes at the beam ejection into the air are determin
 ed.\nRecommendations of formation of proton micron and submicron-sized bea
 m at EGP-10 accelerator are made basing on obtained experimental data. \n\
 n1. А.S. Kamyshan et al\, Vestnik BGU (2007).\n2. G.U.L.Nagy et al.\, Nuc
 lear Inst. and Methods in Physics Research B. (2018).\n3. S. Wongke et al.
 \, Surface & Coatings Technology 399 (2020).\n4. S.N. Abramovich\, VANT Se
 r. Fiz.Yad.Reak. TIYaS-XI. 4. (1997).\n\nhttps://events.sinp.msu.ru/event/
 8/contributions/296/
LOCATION: Физический ф-т\, ауд. 5-42
URL:https://events.sinp.msu.ru/event/8/contributions/296/
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