| Paper | Title | Page |
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| MOPAB045 | Measurements and Simulations of High Charge Beam in the APS Booster | 197 |
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| For the APS-Upgrade, swap-out injection will require the booster to support up to 17 nC bunch charge, several times what is used in the present APS. Booster injection efficiency drops sharply at high charge, and is the present bottleneck limiting high charge transport through the injectors. Particle tracking simulations have been used to understand what causes are limiting the injection efficiency, and to guide plans for improving it. In particular, bunch length blowup in the injected beam and beam loading in the RF cavities have been identified as the biggest factors. Simulations and measurements have also been done to characterize beam properties along the booster energy ramp. So far, a bunch charge of 12 nC has been successfully extracted from the booster. | ||
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB045 | |
| About • | paper received ※ 19 May 2021 paper accepted ※ 26 July 2021 issue date ※ 16 August 2021 | |
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| MOPAB124 | APS Booster Injection Horizontal Trajectory Control Upgrade | 449 |
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Funding: * Work supported by the U.S. Department of Energy, Office of Science, under Contract No. DE-ACO2-O6CH11357. The APS booster is a 7-GeV electron synchrotron with a 0.5-second cycle. The booster runs a set of injection control programs that correct the beam trajectory in the horizontal and longitudinal planes, and the betatron tunes. Recently we developed a single-turn BPM controllaw program for horizontal trajectory control to replace the previous FFT based horizontal controllaw program. We present the system configuration and results. |
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| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB124 | |
| About • | paper received ※ 15 May 2021 paper accepted ※ 27 May 2021 issue date ※ 21 August 2021 | |
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| MOPAB213 | Characterization of Linear Optics and Beam Parameters for the APS Booster with Turn-by-Turn BPM Data | 703 |
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| We take turn-by-turn (TBT) BPM data on the energy ramp of the APS Booster, and analyze the data with the independent component analysis. The extraction kicker was used to excite the betatron motion. The linear optics of the machine is characterized with the TBT BPM data. We also analyze the decoherence pattern of the kicked beam, from which we are able to derive beam distribution parameters, such as the momentum spread. | ||
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB213 | |
| About • | paper received ※ 13 May 2021 paper accepted ※ 11 June 2021 issue date ※ 19 August 2021 | |
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