| Paper |
Title |
Page |
| WEPRB076 |
Analysis of Higher Order Multipoles of the 952.6 Mhz RF-Dipole Crabbing Cavity for the Jefferson Lab Electron-Ion Collider |
2996 |
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- S.U. De Silva, J.R. Delayen, S. Sosa
ODU, Norfolk, Virginia, USA
- V.S. Morozov, H. Park
JLab, Newport News, Virginia, USA
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The crabbing system is a key feature in the Jefferson Lab Electron-Ion Collider (JLEIC) required to increase the luminosity of the colliding bunches. A local crabbing system will be installed with superconducting rf-dipole crabbing cavities operating at 952.6 MHz. The field non-uniformity across the beam aperture in the crabbing cavities produces higher order multipole components, similar to that which are present in magnets. Knowledge of higher order mode multipole field effects is important for accurate beam dynamics study for the crabbing system. In this paper, we quantify the multipole components and analyse their effects on the beam dynamics.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2019-WEPRB076
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| About • |
paper received ※ 20 May 2019 paper accepted ※ 23 May 2019 issue date ※ 21 June 2019 |
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| WEPRB077 |
Simulation and Measurements of HOM Filter of the LARP Prototype RF-Dipole Crabbing Cavity Using an RF Test Box |
2999 |
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- S.U. De Silva, J.R. Delayen
ODU, Norfolk, Virginia, USA
- Z. Li
SLAC, Menlo Park, California, USA
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The RF-Dipole Crabbing Cavity designed for the LHC High Luminosity Upgrade includes two higher order mode (HOM) couplers. One of the HOM couplers is an rf filter, which is a high pass filter designed to couple to the horizontal dipole modes and accelerating modes up to 2 GHz, while rejecting the fundamental operating mode at 400 MHz. The coupler consists of a high pass filter circuit where the rejection of the operating mode and transmission of HOMs are sensitive to dimensional deviations. An rf test box has been designed to measure the transmission of the rf filter in order to qualify the fabricated HOM coupler and to tune the coupler. This paper presents the measurements of the HOM coupler with the rf test box.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2019-WEPRB077
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|
| About • |
paper received ※ 20 May 2019 paper accepted ※ 21 May 2019 issue date ※ 21 June 2019 |
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| WEPRB093 |
Design of a Proof-of-principle Crabbing Cavity for the Jefferson Lab Electron-ion Collider |
3027 |
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- H. Park, S.U. De Silva, J.R. Delayen, S.I. Sosa Guitron
ODU, Norfolk, Virginia, USA
- J.R. Delayen, H. Park
JLab, Newport News, Virginia, USA
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The Jefferson Lab design for an electron-ion collider (JLEIC) requires crabbing of the electron and ion beams in order to achieve the design luminosity. A number of options for the crabbing cavities have been explored, and the one which has been selected for the proof-of-principle is a 952 MHz, 2-cell rf-dipole (RFD) cavity. This paper summarizes the electromagnetic design of the cavity and its HOM characteristics.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2019-WEPRB093
|
|
| About • |
paper received ※ 22 May 2019 paper accepted ※ 24 May 2019 issue date ※ 21 June 2019 |
|
| Export • |
reference for this paper using
※ BibTeX,
※ LaTeX,
※ Text/Word,
※ RIS,
※ EndNote (xml)
|
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