JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
@inproceedings{bhat:hb2021-mop23,
author = {C.M. Bhat and N. Eddy},
title = {{Coupled Bunch Instabilities Growth in the Fermilab Booster During Acceleration Cycle}},
% booktitle = {Proc. HB'21},
booktitle = {Proc. 64th Adv. Beam Dyn. Workshop High-Intensity High-Brightness Hadron Beams (HB'21)},
eventdate = {2021-10-04/2021-10-08},
pages = {140--145},
paper = {MOP23},
language = {english},
keywords = {booster, extraction, emittance, injection, acceleration},
venue = {Batavia, IL, USA},
series = {ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams},
number = {64},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {03},
year = {2024},
issn = {2673-5571},
isbn = {978-3-95450-225-7},
doi = {10.18429/JACoW-HB2021-MOP23},
url = {https://jacow.org/hb2021/papers/mop23.pdf},
abstract = {{The Fermilab Booster is an RCS with h=84 and gammaT =5.47 and, during standard operation it accelerates ~4.5E12ppBc from 400 MeV to 8 GeV at 15 Hz. The Booster is being upgraded to handle higher beam intensity >6.7E12ppBc and repetition rate of 20Hz. In the current mode of operation, we perform multi-turn beam injection and capture beam in h=84 system adiabatically. However, we have observed coupled bunch (CB) instabilities in the extracted beam. This issue is expected to worsen at higher beam intensities. In principle, for h=84 one expects 41 modes of oscillations contributing to these CB instabilities. Currently, we have a digital mode damper to mitigate prominent CB modes. We would like to understand at what time in the beam cycle a particular mode is going to originate and how much it contributes at a different time of the cycle. In this regard, we have collected wall current monitor data from injection to extraction and looked for the start of a particular mode of CB instability and its growth for different intensities. This paper presents the results from this study and future plans to mitigate the CB instability in Booster.}},
}