Beam current limitations in the Jefferson Lab FEL: Simulations and analysis of proposed beam breakup experiments

Campisi, I E; Douglas, D; Hovater, C; Krafft, G A; Merminga, L; Yunn, B C

doi:10.1109/PAC.1999.795487

Title: Beam current limitations in the Jefferson Lab FEL: Simulations and analysis of proposed beam breakup experiments

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Abstract

A series of beam experiments is being planned in the Jefferson Lab FEL driver accelerator in order to study multi-pass beam breakup instabilities in the machine and to test the predictions of the numerical code TDBBU. The tests are extensions of previously performed or proposed experiments, and will be considerably more sensitive with the present configuration. The experiments will include: (a) observing the onset of instabilities by lowering the threshold current through manipulation of the beam energy, phase advance, and beam transfer matrices; (b) measurements of beam transfer functions in the recirculating mode; and (c) measurements of the single pass beam transfer functions to obtain direct measurements of the transverse shunt impedance of cavity modes with strong coupling to the beam. Simulations of the different experiments and studies of the sensitivities to the accelerator and beam parameters are presented.

Authors:: Campisi, I E; Douglas, D; Hovater, C; Krafft, G A; Merminga, L; Yunn, B C

Publication Date:: Thu Apr 01 00:00:00 EST 1999

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

Sponsoring Org.:: USDOE Office of Energy Research (ER) (US)

OSTI Identifier:: 754412

Report Number(s):: DOE/ER/40150-1369; JLAB-ACC-99-13
TRN: US0002199

DOE Contract Number:: AC05-84ER40150

Resource Type:: Conference

Resource Relation:: Journal Volume: 2; Conference: Particle Accelerator Conference, 1999, New York, NY (US), 03/29/1999--04/02/1999; Other Information: PBD: 1 Apr 1999

Country of Publication:: United States

Language:: English

Subject:: 43 PARTICLE ACCELERATORS; 42 ENGINEERING; LINEAR ACCELERATORS; FREE ELECTRON LASERS; BEAM DYNAMICS; T CODES; TESTING; TRANSFER FUNCTIONS; BEAM CURRENTS; FEL

Citation Formats


                    Campisi, I E, Douglas, D, Hovater, C, Krafft, G A, Merminga, L, and Yunn, B C. Beam current limitations in the Jefferson Lab FEL: Simulations and analysis of proposed beam breakup experiments.  United States: N. p., 1999. 
        Web.  doi:10.1109/PAC.1999.795487.

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                    Campisi, I E, Douglas, D, Hovater, C, Krafft, G A, Merminga, L, & Yunn, B C. Beam current limitations in the Jefferson Lab FEL: Simulations and analysis of proposed beam breakup experiments.  United States.  https://doi.org/10.1109/PAC.1999.795487

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                    Campisi, I E, Douglas, D, Hovater, C, Krafft, G A, Merminga, L, and Yunn, B C. 1999.  
        "Beam current limitations in the Jefferson Lab FEL: Simulations and analysis of proposed beam breakup experiments".  United States.  https://doi.org/10.1109/PAC.1999.795487.  https://www.osti.gov/servlets/purl/754412.

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@article{osti_754412,

  title        = {Beam current limitations in the Jefferson Lab FEL: Simulations and analysis of proposed beam breakup experiments},

  author       = {Campisi, I E and Douglas, D and Hovater, C and Krafft, G A and Merminga, L and Yunn, B C},

  abstractNote = {A series of beam experiments is being planned in the Jefferson Lab FEL driver accelerator in order to study multi-pass beam breakup instabilities in the machine and to test the predictions of the numerical code TDBBU. The tests are extensions of previously performed or proposed experiments, and will be considerably more sensitive with the present configuration. The experiments will include: (a) observing the onset of instabilities by lowering the threshold current through manipulation of the beam energy, phase advance, and beam transfer matrices; (b) measurements of beam transfer functions in the recirculating mode; and (c) measurements of the single pass beam transfer functions to obtain direct measurements of the transverse shunt impedance of cavity modes with strong coupling to the beam. Simulations of the different experiments and studies of the sensitivities to the accelerator and beam parameters are presented.},

  doi          = {10.1109/PAC.1999.795487},

  url          = {https://www.osti.gov/biblio/754412},
  journal      = {},
number       = ,

  volume       = 2,

  place        = {United States},

  year         = {Thu Apr 01 00:00:00 EST 1999},

  month        = {Thu Apr 01 00:00:00 EST 1999}

}

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