SAP2023 - List of Keywords (software)

Paper	Title	Other Keywords	Page
MOPB019	Development Status of Beam Dynamics Software APES for CEPC	collider, alignment, positron, lattice	49
	W.B. Liu, Z. Duan, H. Geng, T. Xin, Y. Zhang, Y.L. Zhao IHEP, Beijing, People’s Republic of China Y.X. Dai, Z.H. Li, W.B. Liu, M.Y. Su, Y. Zhang UCAS, Beijing, People’s Republic of China X.H. Lu IHEP CSNS, Guangdong Province, People’s Republic of China
	Funding: Innovative Fund of IHEP The physical design and research work of China Electron Positron Collider (CEPC) is an unprecedented challenge in the field of international accelerator collider. In the simulation research, many physical phenomena must be considered, including large Piwinski angle, crab waist colliding, strong nonlinear effect, energy sawtooth, beam-beam, etc. To address this challenge, a software project APES is proposed in 2021. And this project received support from the IHEP innovative fund in 2022. The progress and future plans of APES project will be introduced in the poster.
DOI •	reference for this paper ※ doi:10.18429/JACoW-SAP2023-MOPB019
About •	Received ※ 05 July 2023 — Accepted ※ 11 July 2023 — Issued ※ 16 September 2024
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPB015	Research on First Harmonic Shimming Method of Cyclotron Based on Least Norm Square Solution	MMI, cyclotron, simulation, proton	114
	J.R. Lu, S. An, T.J. Bian CIAE, Beijing, People’s Republic of China
	The magnetic field measurement of cyclotron and the shimming of isochronous magnetic field are one of the important links in cyclotron. Due to the influence of factors such as processing errors, installation errors, and inhomogeneity of the magnetic properties of mag-net materials, the main magnetic field of the cyclotron will usually deviate from the required isochronous magnetic field and contain a certain amplitude of the first harmonic magnetic field. The existence of the first harmonic magnetic field will rapidly increase the transverse oscillation amplitude and cyclic emittance of the particles, eventually causing beam loss. In order to improve the beam quality of the cyclotron, the shimming technology of the first harmonic magnetic field is essential. In this paper, through the finite element simulation calculation of the main magnet of the cyclotron, a quantitative algorithm for the first harmonic shimming based on the least norm square solution is proposed. At present, this method is being pre-pared for apply to the magnetic field shimming of the 10MeV high-current proton cyclotron of the CIAE.
DOI •	reference for this paper ※ doi:10.18429/JACoW-SAP2023-TUPB015
About •	Received ※ 29 June 2023 — Revised ※ 09 July 2023 — Accepted ※ 12 July 2023 — Issued ※ 18 September 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

MOPB019

Development Status of Beam Dynamics Software APES for CEPC

collider, alignment, positron, lattice

49

W.B. Liu, Z. Duan, H. Geng, T. Xin, Y. Zhang, Y.L. Zhao
IHEP, Beijing, People’s Republic of China
Y.X. Dai, Z.H. Li, W.B. Liu, M.Y. Su, Y. Zhang
UCAS, Beijing, People’s Republic of China
X.H. Lu
IHEP CSNS, Guangdong Province, People’s Republic of China

Funding: Innovative Fund of IHEP
The physical design and research work of China Electron Positron Collider (CEPC) is an unprecedented challenge in the field of international accelerator collider. In the simulation research, many physical phenomena must be considered, including large Piwinski angle, crab waist colliding, strong nonlinear effect, energy sawtooth, beam-beam, etc. To address this challenge, a software project APES is proposed in 2021. And this project received support from the IHEP innovative fund in 2022. The progress and future plans of APES project will be introduced in the poster.

DOI •

reference for this paper ※ doi:10.18429/JACoW-SAP2023-MOPB019

About •

Received ※ 05 July 2023 — Accepted ※ 11 July 2023 — Issued ※ 16 September 2024

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPB015

Research on First Harmonic Shimming Method of Cyclotron Based on Least Norm Square Solution

MMI, cyclotron, simulation, proton

114

J.R. Lu, S. An, T.J. Bian
CIAE, Beijing, People’s Republic of China

The magnetic field measurement of cyclotron and the shimming of isochronous magnetic field are one of the important links in cyclotron. Due to the influence of factors such as processing errors, installation errors, and inhomogeneity of the magnetic properties of mag-net materials, the main magnetic field of the cyclotron will usually deviate from the required isochronous magnetic field and contain a certain amplitude of the first harmonic magnetic field. The existence of the first harmonic magnetic field will rapidly increase the transverse oscillation amplitude and cyclic emittance of the particles, eventually causing beam loss. In order to improve the beam quality of the cyclotron, the shimming technology of the first harmonic magnetic field is essential. In this paper, through the finite element simulation calculation of the main magnet of the cyclotron, a quantitative algorithm for the first harmonic shimming based on the least norm square solution is proposed. At present, this method is being pre-pared for apply to the magnetic field shimming of the 10MeV high-current proton cyclotron of the CIAE.

DOI •

reference for this paper ※ doi:10.18429/JACoW-SAP2023-TUPB015

About •

Received ※ 29 June 2023 — Revised ※ 09 July 2023 — Accepted ※ 12 July 2023 — Issued ※ 18 September 2023

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)