Abstract

We present the experimental observation of the reduction of multiple scattering of high-energy positively charged particles during channeling in single crystals. According to our measurements the rms angle of multiple scattering in the plane orthogonal to the plane of the channeling is less than half that for non-channeled particles moving in the same crystal. In the experiment we use focusing bent single crystals. Such crystals have a variable thickness in the direction of beam propagation. This allows us to measure rms angles of scattering as a function of thickness for channeled and non-channeled particles. The behaviour with thickness of non-channeled particles is in agreement with expectations whereas the behaviour of channeled particles has unexpected features.

Details

Title
Reduction of multiple scattering of high-energy positively charged particles during channeling in single crystals
Author
Scandale, W 1 ; Esposito, L S 1 ; Garattini, M 2 ; Rossi, R 1 ; Zhovkovska, V 1 ; Natochii, A 3 ; Addesa, F 4 ; Iacoangeli, F 4 ; Galluccio, F 5 ; Murtas, F 6 ; Afonin, A G 7 ; Chesnokov, Yu A 7 ; Durum, A A 7 ; Maisheev, V A 7 ; Sandomirskiy, Yu E 7 ; Yanovich, A A 7 ; Smirnov, G I 8 ; Gavrikov, Yu A 9 ; Ivanov, Yu M 9 ; Koznov, M A 9 ; Malkov, M V 9 ; Malyarenko, L G 9 ; Mamunct, I G 9 ; Borg, J 10 ; James, T 10 ; Hall, G 10 ; Pesaresi, M 10 

1  CERN, European Organization for Nuclear Research, Geneva 23, Switzerland (GRID:grid.9132.9) (ISNI:0000 0001 2156 142X) 
2  CERN, European Organization for Nuclear Research, Geneva 23, Switzerland (GRID:grid.9132.9) (ISNI:0000 0001 2156 142X); Imperial College, Blackett Laboratory, London, UK (GRID:grid.7445.2) (ISNI:0000 0001 2113 8111) 
3  Universite Paris Sud Orsay, Laboratore de l’Accelerateur Lineaire (LAL), Orsay, France (GRID:grid.5842.b) (ISNI:0000 0001 2171 2558) 
4  INFN Sezione di Roma, Rome, Italy (GRID:grid.470218.8) 
5  INFN Sezione di Napoli, Naples, Italy (GRID:grid.470211.1) 
6  INFN, LNF, Frascati, Italy (GRID:grid.463190.9) (ISNI:0000 0004 0648 0236) 
7  NRC Kurchatov Institute-IHEP, Protvino, Russia (GRID:grid.18919.38) (ISNI:0000000406204151) 
8  CERN, European Organization for Nuclear Research, Geneva 23, Switzerland (GRID:grid.9132.9) (ISNI:0000 0001 2156 142X); Joint Institute for Nuclear Research, Dubna, Russia (GRID:grid.33762.33) (ISNI:0000000406204119) 
9  Petersburg Nuclear Physics Institute in National Research Centre “Kurchatov Institute”, Gatchina, Russia (GRID:grid.430219.d) (ISNI:0000 0004 0619 3376) 
10  Imperial College, Blackett Laboratory, London, UK (GRID:grid.7445.2) (ISNI:0000 0001 2113 8111) 
Publication year
2019
Publication date
Dec 2019
Publisher
Springer Nature B.V.
ISSN
14346044
e-ISSN
14346052
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1140/epjc/s10052-019-7515-8
ProQuest document ID
2322609833
Copyright
The European Physical Journal C is a copyright of Springer, (2019). All Rights Reserved. This work is published under https://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.