IBIC2018 - List of Keywords (coupling)

Paper	Title	Other Keywords	Page
MOPB17	Using a TE011 Cavity as a Magnetic Momentum Monitor	cavity, electron, GUI, impedance	111
	J. Guo, J. Henry, M. Poelker, R.A. Rimmer, R. Suleiman, H. Wang JLab, Newport News, Virginia, USA
	Funding: Authored by Jefferson Science Associates, LLC with Laboratory Directed Research and Development funding, under U.S. DOE Contract No. DE-AC05-06OR23177. The Jefferson Lab Electron-Ion Collider (JLEIC) design relies on cooling of the ion beam with bunched electron beam constrained in a pair of long solenoids. The high current cooling electron beam needs to be generated in a magnetized electron source, and the beam’s magnetization needs to be maintained during the acceleration and transport to the cooling channel. A non-invasive real time monitoring system is highly desired to quantify electron beam magnetization. The authors propose to use a passive copper RF cavity in TE011 mode as such a monitor. In this paper, we present the mechanism and scaling law of this device, as well as the design and preliminary test results of the prototype cavity.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2018-MOPB17
About •	paper received ※ 11 September 2018 paper accepted ※ 12 September 2018 issue date ※ 29 January 2019
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TUOB02	Optics Measurements in Storage Rings: Simultaneous 3-Dimensional Beam Excitation and Novel Harmonic Analysis	optics, dipole, betatron, synchrotron	177
	L. Malina, J.M. Coello de Portugal, J. Dilly, P.K. Skowroński, R. Tomás CERN, Geneva, Switzerland
	Optics measurements in storage rings employ turn-by-turn data of transversely excited beams. Chromatic parameters need measurements to be repeated at different beam energies, which is time-consuming. We present an optics measurement method based on adiabatic simultaneous 3-dimensional beam excitation, where no repetition at different energies is needed. In the LHC, the method has been successfully demonstrated utilising AC-dipoles combined with RF frequency modulation. It allows measuring the linear optics parameters and chromatic properties at the same time without resolution deterioration. We also present a new accurate harmonic analysis algorithm that exploits the noise cleaning based on singular value decomposition to compress the input data. In the LHC, this sped up harmonic analysis by a factor up to 300. These methods are becoming a "push the button" operational tool to measure the optics.
	Slides TUOB02 [1.117 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2018-TUOB02
About •	paper received ※ 04 September 2018 paper accepted ※ 10 September 2018 issue date ※ 29 January 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPB10	Design and Simulation of Stripline BPM for HUST Proton Therapy Facility	impedance, proton, dipole, electron	281
	J.Q. Li, Q.S. Chen, K. Fan, K. Tang, P. Tian HUST, Wuhan, People’s Republic of China
	Proton beams used in Huazhong University of Science and Technology Proton Therapy Facility（HUST-PTF）have extreme low currents of the order of nanoampere，which is a great challenge to beam diagnostics due to low signal level. Conventional destructive beam diagnostic devices will affect the quality of the beam and cannot work online during the patient treatment, so a non-destructive stripline beam position monitor (BPM) is designed. This study will introduce some analysis and simulation results of the stripline BPM, such as the coupling between the electrodes, impedance matching, signal response, etc. We also discussed how to increase the output signal by geometry optimization.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2018-TUPB10
About •	paper received ※ 05 September 2018 paper accepted ※ 11 September 2018 issue date ※ 29 January 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPC01	Australian Synchrotron BPM Electronics Upgrade	electron, brilliance, synchrotron, storage-ring	297
	Y.E. Tan, R.B. Hogan AS - ANSTO, Clayton, Australia
	The storage ring at the Australian Synchrotron (AS) was originally equipped with 98 Libera Electrons. In late 2017 all 98 of the BPM electronics has been upgraded to Libera Brilliance⁺ and the old Libera Electrons have been moved to the injection system. The transition process and results from commissioning the new system will be presented.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2018-TUPC01
About •	paper received ※ 05 September 2018 paper accepted ※ 13 September 2018 issue date ※ 29 January 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

MOPB17

Using a TE011 Cavity as a Magnetic Momentum Monitor

cavity, electron, GUI, impedance

111

J. Guo, J. Henry, M. Poelker, R.A. Rimmer, R. Suleiman, H. Wang
JLab, Newport News, Virginia, USA

Funding: Authored by Jefferson Science Associates, LLC with Laboratory Directed Research and Development funding, under U.S. DOE Contract No. DE-AC05-06OR23177.
The Jefferson Lab Electron-Ion Collider (JLEIC) design relies on cooling of the ion beam with bunched electron beam constrained in a pair of long solenoids. The high current cooling electron beam needs to be generated in a magnetized electron source, and the beam’s magnetization needs to be maintained during the acceleration and transport to the cooling channel. A non-invasive real time monitoring system is highly desired to quantify electron beam magnetization. The authors propose to use a passive copper RF cavity in TE011 mode as such a monitor. In this paper, we present the mechanism and scaling law of this device, as well as the design and preliminary test results of the prototype cavity.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2018-MOPB17

About •

paper received ※ 11 September 2018 paper accepted ※ 12 September 2018 issue date ※ 29 January 2019

Export •

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

TUOB02

Optics Measurements in Storage Rings: Simultaneous 3-Dimensional Beam Excitation and Novel Harmonic Analysis

optics, dipole, betatron, synchrotron

177

L. Malina, J.M. Coello de Portugal, J. Dilly, P.K. Skowroński, R. Tomás
CERN, Geneva, Switzerland

Optics measurements in storage rings employ turn-by-turn data of transversely excited beams. Chromatic parameters need measurements to be repeated at different beam energies, which is time-consuming. We present an optics measurement method based on adiabatic simultaneous 3-dimensional beam excitation, where no repetition at different energies is needed. In the LHC, the method has been successfully demonstrated utilising AC-dipoles combined with RF frequency modulation. It allows measuring the linear optics parameters and chromatic properties at the same time without resolution deterioration. We also present a new accurate harmonic analysis algorithm that exploits the noise cleaning based on singular value decomposition to compress the input data. In the LHC, this sped up harmonic analysis by a factor up to 300. These methods are becoming a "push the button" operational tool to measure the optics.

Slides TUOB02 [1.117 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2018-TUOB02

About •

paper received ※ 04 September 2018 paper accepted ※ 10 September 2018 issue date ※ 29 January 2019

Export •

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

TUPB10

Design and Simulation of Stripline BPM for HUST Proton Therapy Facility

impedance, proton, dipole, electron

281

J.Q. Li, Q.S. Chen, K. Fan, K. Tang, P. Tian
HUST, Wuhan, People’s Republic of China

Proton beams used in Huazhong University of Science and Technology Proton Therapy Facility（HUST-PTF）have extreme low currents of the order of nanoampere，which is a great challenge to beam diagnostics due to low signal level. Conventional destructive beam diagnostic devices will affect the quality of the beam and cannot work online during the patient treatment, so a non-destructive stripline beam position monitor (BPM) is designed. This study will introduce some analysis and simulation results of the stripline BPM, such as the coupling between the electrodes, impedance matching, signal response, etc. We also discussed how to increase the output signal by geometry optimization.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2018-TUPB10

About •

paper received ※ 05 September 2018 paper accepted ※ 11 September 2018 issue date ※ 29 January 2019

Export •

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

TUPC01

Australian Synchrotron BPM Electronics Upgrade

electron, brilliance, synchrotron, storage-ring

297

Y.E. Tan, R.B. Hogan
AS - ANSTO, Clayton, Australia

The storage ring at the Australian Synchrotron (AS) was originally equipped with 98 Libera Electrons. In late 2017 all 98 of the BPM electronics has been upgraded to Libera Brilliance⁺ and the old Libera Electrons have been moved to the injection system. The transition process and results from commissioning the new system will be presented.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2018-TUPC01

About •

paper received ※ 05 September 2018 paper accepted ※ 13 September 2018 issue date ※ 29 January 2019

Export •

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