國立高雄大學圖資館 |

Language: English

Back

Fast transverse beam instability cau...

Antipov, Sergey A.

Fast transverse beam instability caused by electron cloud trapped in combined function magnets

Record Type:	Electronic resources : Monograph/item
Title/Author:	Fast transverse beam instability caused by electron cloud trapped in combined function magnetsby Sergey A. Antipov.
Author:	Antipov, Sergey A.
Published:	Cham :Springer International Publishing :2018.
Description:	xi, 88 p. :ill. (some col.), digital ;24 cm.
Contained By:	Springer eBooks
Subject:	Particle beam instabilities.
Online resource:	https://doi.org/10.1007/978-3-030-02408-6
ISBN:	9783030024086$q(electronic bk.)

Fast transverse beam instability caused by electron cloud trapped in combined function magnets
Antipov, Sergey A.

Fast transverse beam instability caused by electron cloud trapped in combined function magnets[electronic resource] /by Sergey A. Antipov. - Cham :Springer International Publishing :2018. - xi, 88 p. :ill. (some col.), digital ;24 cm. - Springer theses,2190-5053. - Springer theses..

Chapter1. Electron Cloud in Particle Accelerators -- Chapter2. Beam Dynamics Measurements of the Fast Instability -- Chapter3. Microwave Measurement of the Cloud Density -- Chapter4. Numerical Simulation -- Chapter5. Analytical Model of the Electron Cloud Instability -- Chapter6. Conclusion.

This thesis presents profound insights into the origins and dynamics of beam instabilities using both experimental observations and numerical simulations. When the Recycler Ring, a high-intensity proton beam accelerator at Fermi National Accelerator Laboratory, was commissioned, it became evident that the Recycler beam experiences a very fast instability of unknown nature. This instability was so fast that the existing dampers were ineffective at suppressing it. The nature of this phenomenon, alongside several other poorly understood features of the beam, became one of the biggest puzzles in the accelerator community. The author investigated a hypothesis that the instability arises from an interaction with a dense cloud of electrons accompanying the proton beam. He studied the phenomena experimentally by comparing the dynamics of stable and unstable beams, by numerically simulating the build-up of the electron cloud and its interaction with the beam, and by constructing an analytical model of an electron cloud-driven instability with the electrons trapped in combined-function dipole magnets. He has devised a method to stabilize the beam by a clearing bunch, which conclusively revealed that the instability is caused by the electron cloud, trapped in a strong magnetic field. Finally, he conducted measurements of the microwave propagation through a single dipole magnet. These measurements have confirmed the presence of the electron cloud in combined-function magnets.

ISBN: 9783030024086$q(electronic bk.)

Standard No.: 10.1007/978-3-030-02408-6doiSubjects--Topical Terms:

267101
Particle beam instabilities.

LC Class. No.: QC793.3.B4 / A585 2018

Dewey Class. No.: 539.73

Fast transverse beam instability caused by electron cloud trapped in combined function magnets
LDR:02848nmm a2200337 a 4500 001 545904
003 DE-He213
005 20190327150002.0
006 m d
007 cr nn 008maaau
008 190530s2018 gw s 0 eng d
020 $a 9783030024086$q(electronic bk.)
020 $a 9783030024079$q(paper)
024 7 $a 10.1007/978-3-030-02408-6 $2 doi
035 $a 978-3-030-02408-6
040 $a GP $c GP
041 0 $a eng
050 4 $a QC793.3.B4 $b A585 2018
072 7 $a PHP $2 bicssc
072 7 $a SCI051000 $2 bisacsh
072 7 $a PHP $2 thema
082 0 4 $a 539.73 $2 23
090 $a QC793.3.B4 $b A633 2018
100 1 $a Antipov, Sergey A. $3 825028
245 1 0 $a Fast transverse beam instability caused by electron cloud trapped in combined function magnets $h [electronic resource] / $c by Sergey A. Antipov.
260 $a Cham : $b Springer International Publishing : $b Imprint: Springer, $c 2018.
300 $a xi, 88 p. : $b ill. (some col.), digital ; $c 24 cm.
490 1 $a Springer theses, $x 2190-5053
505 0 $a Chapter1. Electron Cloud in Particle Accelerators -- Chapter2. Beam Dynamics Measurements of the Fast Instability -- Chapter3. Microwave Measurement of the Cloud Density -- Chapter4. Numerical Simulation -- Chapter5. Analytical Model of the Electron Cloud Instability -- Chapter6. Conclusion.
520 $a This thesis presents profound insights into the origins and dynamics of beam instabilities using both experimental observations and numerical simulations. When the Recycler Ring, a high-intensity proton beam accelerator at Fermi National Accelerator Laboratory, was commissioned, it became evident that the Recycler beam experiences a very fast instability of unknown nature. This instability was so fast that the existing dampers were ineffective at suppressing it. The nature of this phenomenon, alongside several other poorly understood features of the beam, became one of the biggest puzzles in the accelerator community. The author investigated a hypothesis that the instability arises from an interaction with a dense cloud of electrons accompanying the proton beam. He studied the phenomena experimentally by comparing the dynamics of stable and unstable beams, by numerically simulating the build-up of the electron cloud and its interaction with the beam, and by constructing an analytical model of an electron cloud-driven instability with the electrons trapped in combined-function dipole magnets. He has devised a method to stabilize the beam by a clearing bunch, which conclusively revealed that the instability is caused by the electron cloud, trapped in a strong magnetic field. Finally, he conducted measurements of the microwave propagation through a single dipole magnet. These measurements have confirmed the presence of the electron cloud in combined-function magnets.
650 0 $a Particle beam instabilities. $3 267101
650 0 $a Electron-atom collisions. $3 825029
650 1 4 $a Particle Acceleration and Detection, Beam Physics. $3 275493
650 2 4 $a Magnetism, Magnetic Materials. $3 274439
650 2 4 $a Strongly Correlated Systems, Superconductivity. $3 456352
650 2 4 $a Numerical and Computational Physics, Simulation. $3 758154
710 2 $a SpringerLink (Online service) $3 273601
773 0 $t Springer eBooks
830 0 $a Springer theses. $3 557607
856 4 0 $u https://doi.org/10.1007/978-3-030-02408-6
950 $a Physics and Astronomy (Springer-11651)