TRANSIENT BEAM LOADING EFFECTS IN RF SYSTEMS IN JLEIC

doi:https://doi.org/10.18429/JACoW-IPAC2016-MOPMY003

Title: TRANSIENT BEAM LOADING EFFECTS IN RF SYSTEMS IN JLEIC

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Abstract

The pulsed electron bunch trains generated from the Continuous Electron Beam Accelerator Facility (CEBAF) linac to inject into the proposed Jefferson Lab Electron Ion Collider (JLEIC) e-ring will produce transient beam loading effects in the Superconducting Radio Frequency (SRF) systems that, if not mitigated, could cause unacceptably large beam energy deviation in the injection capture, or exceed the energy acceptance of CEBAF’s recirculating arcs. In the electron storage ring, the beam abort or ion clearing gaps or uneven bucket filling can cause large beam phase transients in the (S)RF cavity control systems and even beam loss due to Robinson instability. We have first analysed the beam stability criteria in steady state and estimated the transient effect in Feedforward and Feedback RF controls. Initial analytical models for these effects are shown for the design of the JLEIC e-ring from 3GeV to 12GeV.

Authors:

Wang, Haipeng ^[1]; Guo, Jiquan ^[1]; Rimmer, Robert A. ^[1]; Wang, Shaoheng ^[1]

Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Publication Date:: 2016-05-01

Research Org.:: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)

OSTI Identifier:: 1331994

Report Number(s):: JLAB-ACC-16-2273; DOE/OR/23177-3817

DOE Contract Number:: AC05-06OR23177

Resource Type:: Conference

Resource Relation:: Conference: IPAC'16, 08-13 May 2016. Busan, Korea

Country of Publication:: United States

Language:: English

Citation Formats


                    Wang, Haipeng, Guo, Jiquan, Rimmer, Robert A., and Wang, Shaoheng. TRANSIENT BEAM LOADING EFFECTS IN RF SYSTEMS IN JLEIC.  United States: N. p., 2016. 
        Web.  doi:10.18429/JACoW-IPAC2016-MOPMY003.

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                    Wang, Haipeng, Guo, Jiquan, Rimmer, Robert A., & Wang, Shaoheng. TRANSIENT BEAM LOADING EFFECTS IN RF SYSTEMS IN JLEIC.  United States.  https://doi.org/10.18429/JACoW-IPAC2016-MOPMY003

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                    Wang, Haipeng, Guo, Jiquan, Rimmer, Robert A., and Wang, Shaoheng. Sun .  
        "TRANSIENT BEAM LOADING EFFECTS IN RF SYSTEMS IN JLEIC".  United States.  https://doi.org/10.18429/JACoW-IPAC2016-MOPMY003.  https://www.osti.gov/servlets/purl/1331994.

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@article{osti_1331994,

  title        = {TRANSIENT BEAM LOADING EFFECTS IN RF SYSTEMS IN JLEIC},

  author       = {Wang, Haipeng and Guo, Jiquan and Rimmer, Robert A. and Wang, Shaoheng},

  abstractNote = {The pulsed electron bunch trains generated from the Continuous Electron Beam Accelerator Facility (CEBAF) linac to inject into the proposed Jefferson Lab Electron Ion Collider (JLEIC) e-ring will produce transient beam loading effects in the Superconducting Radio Frequency (SRF) systems that, if not mitigated, could cause unacceptably large beam energy deviation in the injection capture, or exceed the energy acceptance of CEBAF’s recirculating arcs. In the electron storage ring, the beam abort or ion clearing gaps or uneven bucket filling can cause large beam phase transients in the (S)RF cavity control systems and even beam loss due to Robinson instability. We have first analysed the beam stability criteria in steady state and estimated the transient effect in Feedforward and Feedback RF controls. Initial analytical models for these effects are shown for the design of the JLEIC e-ring from 3GeV to 12GeV.},

  doi          = {10.18429/JACoW-IPAC2016-MOPMY003},

  url          = {https://www.osti.gov/biblio/1331994},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2016},

  month        = {5}

}

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