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| MOPB17 |
Using a TE011 Cavity as a Magnetic Momentum Monitor |
cavity, electron, impedance, coupling |
111 |
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- J. Guo, J. Henry, M. Poelker, R.A. Rimmer, R. Suleiman, H. Wang
JLab, Newport News, Virginia, USA
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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.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IBIC2018-MOPB17
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| About • |
paper received ※ 11 September 2018 paper accepted ※ 12 September 2018 issue date ※ 29 January 2019 |
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| TUPA01 |
Pin Diode in a Medical Accelerator - a Proof of Principle and Preliminary Measurements |
extraction, controls, beam-diagnostic, diagnostics |
208 |
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- A. Pozenel, M. Eichinger, S. Enke, M. Fürtinger, C. Kurfürst, M. Repovž
EBG MedAustron, Wr. Neustadt, Austria
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The MedAustron Ion Therapy Center located south of Vienna, Austria, is a cancer treatment facility utilizing a particle therapy accelerator optimized for protons and carbon ions. The beam is injected into the synchrotron, accelerated to the desired speed and extracted to be guid-ed into one of four irradiation rooms. During extraction a certain amount of particles is lost which is measured with a PIN diode. In this paper the measurement method of this system is presented, as well as some measurement attempts documented.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IBIC2018-TUPA01
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| About • |
paper received ※ 05 September 2018 paper accepted ※ 11 September 2018 issue date ※ 29 January 2019 |
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| THOB02 |
Energy Loss Measurements with Streak Camera at ALBA |
injection, storage-ring, simulation, synchrotron |
548 |
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- A.A. Nosych, B. Bravo, U. Iriso
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
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Analyzing streak camera images of the beam injected into a Storage Ring with no RF voltage allows calculating several parameters, like the energy loss per turn and the energy mismatch between injected and stored beams. These measurements are based on the analysis of the centroid drift path of a bunch as it spirals inwards, changing its rotation period. This drift is clear and measurable in single and multi-bunch modes in several horizontal sweep speeds of the streak. With this technique we also measure the momentum compaction factor and observe its change with respect to the insertion devices’ open/closed states. The obtained values are comparable with theoretical expectations, as well as with values measured by other means.
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Slides THOB02 [3.030 MB]
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IBIC2018-THOB02
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| About • |
paper received ※ 07 September 2018 paper accepted ※ 14 September 2018 issue date ※ 29 January 2019 |
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