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Title: IOTA (Integrable Optics Test Accelerator): Facility and experimental beam physics program

Abstract

The Integrable Optics Test Accelerator (IOTA) is a storage ring for advanced beam physics research currently being built and commissioned at Fermilab. It will operate with protons and electrons using injectors with momenta of 70 and 150 MeV/c, respectively. The research program includes the study of nonlinear focusing integrable optical beam lattices based on special magnets and electron lenses, beam dynamics of space-charge effects and their compensation, optical stochastic cooling, and several other experiments. In this article, we present the design and main parameters of the facility, outline progress to date and provide the timeline of the construction, commissioning and research. Finally, the physical principles, design, and hardware implementation plans for the major IOTA experiments are also discussed.

Authors:
 [1];  [1];  [2];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  2. RadiaSoft LLC, Boulder, CO (United States)
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1346367
Report Number(s):
FERMILAB-PUB-16-562-AD-APC; arXiv:1612.06289
Journal ID: ISSN 1748-0221; 1505041; TRN: US1700643
Grant/Contract Number:
AC02-07CH11359
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Instrumentation
Additional Journal Information:
Journal Volume: 12; Journal Issue: 03; Journal ID: ISSN 1748-0221
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; beam dynamics; instrumentation for particle accelerators and storage rings — high energy (linear accelerators, synchrotrons); instrumentation for particle accelerators and storage rings — low energy (linear accelerators, cyclotrons, electrostatic accelerators); beam-line instrumentation (beam position and profile monitors; beam-intensity monitors; bunch length monitors)

Citation Formats

Antipov, Sergei, Broemmelsiek, Daniel, Bruhwiler, David, Edstrom, Dean, Harms, Elvin, Lebedev, Valery, Leibfritz, Jerry, Nagaitsev, Sergei, Park, Chong -Shik, Piekarz, Henryk, Piot, Philippe, Prebys, Eric, Romanov, Alexander, Ruan, Jinhao, Sen, Tanaji, Stancari, Giulio, Thangaraj, Charles, Thurman-Keup, Randy, Valishev, Alexander, and Shiltsev, Vladimir. IOTA (Integrable Optics Test Accelerator): Facility and experimental beam physics program. United States: N. p., 2017. Web. doi:10.1088/1748-0221/12/03/T03002.
Antipov, Sergei, Broemmelsiek, Daniel, Bruhwiler, David, Edstrom, Dean, Harms, Elvin, Lebedev, Valery, Leibfritz, Jerry, Nagaitsev, Sergei, Park, Chong -Shik, Piekarz, Henryk, Piot, Philippe, Prebys, Eric, Romanov, Alexander, Ruan, Jinhao, Sen, Tanaji, Stancari, Giulio, Thangaraj, Charles, Thurman-Keup, Randy, Valishev, Alexander, & Shiltsev, Vladimir. IOTA (Integrable Optics Test Accelerator): Facility and experimental beam physics program. United States. doi:10.1088/1748-0221/12/03/T03002.
Antipov, Sergei, Broemmelsiek, Daniel, Bruhwiler, David, Edstrom, Dean, Harms, Elvin, Lebedev, Valery, Leibfritz, Jerry, Nagaitsev, Sergei, Park, Chong -Shik, Piekarz, Henryk, Piot, Philippe, Prebys, Eric, Romanov, Alexander, Ruan, Jinhao, Sen, Tanaji, Stancari, Giulio, Thangaraj, Charles, Thurman-Keup, Randy, Valishev, Alexander, and Shiltsev, Vladimir. Mon . "IOTA (Integrable Optics Test Accelerator): Facility and experimental beam physics program". United States. doi:10.1088/1748-0221/12/03/T03002. https://www.osti.gov/servlets/purl/1346367.
@article{osti_1346367,
title = {IOTA (Integrable Optics Test Accelerator): Facility and experimental beam physics program},
author = {Antipov, Sergei and Broemmelsiek, Daniel and Bruhwiler, David and Edstrom, Dean and Harms, Elvin and Lebedev, Valery and Leibfritz, Jerry and Nagaitsev, Sergei and Park, Chong -Shik and Piekarz, Henryk and Piot, Philippe and Prebys, Eric and Romanov, Alexander and Ruan, Jinhao and Sen, Tanaji and Stancari, Giulio and Thangaraj, Charles and Thurman-Keup, Randy and Valishev, Alexander and Shiltsev, Vladimir},
abstractNote = {The Integrable Optics Test Accelerator (IOTA) is a storage ring for advanced beam physics research currently being built and commissioned at Fermilab. It will operate with protons and electrons using injectors with momenta of 70 and 150 MeV/c, respectively. The research program includes the study of nonlinear focusing integrable optical beam lattices based on special magnets and electron lenses, beam dynamics of space-charge effects and their compensation, optical stochastic cooling, and several other experiments. In this article, we present the design and main parameters of the facility, outline progress to date and provide the timeline of the construction, commissioning and research. Finally, the physical principles, design, and hardware implementation plans for the major IOTA experiments are also discussed.},
doi = {10.1088/1748-0221/12/03/T03002},
journal = {Journal of Instrumentation},
number = 03,
volume = 12,
place = {United States},
year = {Mon Mar 06 00:00:00 EST 2017},
month = {Mon Mar 06 00:00:00 EST 2017}
}

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  • We outline the design of beam experiments for the electron linac at the Fermilab Accelerator Science and Technology (FAST) facility and for the Integrable Optics Test Accelerator (IOTA), based on synchrotron light emitted by the electrons in bend dipoles, detected with gated microchannel-plate photomultipliers (MCP-PMTs). The system can be used both for beam diagnostics (e.g., beam intensity with full dynamic range, turn-by-turn beam vibrations, etc.) and for scientific experiments, such as the direct observation of the time structure of the radiation emitted by single electrons in a storage ring. The similarity between photon pulses and spectrum at the downstream endmore » of the electron linac and in the IOTA ring allows one to test the apparatus during commissioning of the linac.« less
  • The use of nonlinear lattices with large betatron tune spreads can increase instability and space charge thresholds due to improved Landau damping. Unfortunately, the majority of nonlinear accelerator lattices turn out to be nonintegrable, producing chaotic motion and a complex network of stable and unstable resonances. Recent advances in finding the integrable nonlinear accelerator lattices have led to a proposal to construct at Fermilab a test accelerator with strong nonlinear focusing which avoids resonances and chaotic particle motion. This presentation will outline the main challenges, theoretical design solutions and construction status of the Integrable Optics Test Accelerator (IOTA) underway atmore » Fermilab.« less
  • The Integrable Optics Test Accelerator (IOTA) is an experimental synchrotron being built at Fermilab to test the concept of non-linear "integrable optics". These optics are based on a lattice including non-linear elements that satisfies particular conditions on the Hamiltonian. The resulting particle motion is predicted to be stable but without a unique tune. The system is therefore insensitive to resonant instabilities and can in principle store very intense beams, with space charge tune shifts larger than those which are possible in conventional linear synchrotrons. The ring will initially be tested with pencil electron beams, but this poster describes the ultimatemore » plan to install a 2.5 MeV RFQ to inject protons, which will produce tune shifts on the order of unity. Technical details will be presented, as well as simulations of protons in the ring.« less
  • Fermilab's Integrable Optics Test Accelerator (IOTA) is an electron storage ring designed for testing advanced accelerator physics concepts, including implementation of nonlinear integrable beam optics and experiments on optical stochastic cooling. The machine is currently under construction at the Advanced Superconducting Test Accelerator facility. In this report we present the goals and the current status of the project, and describe the details of machine design. In particular, we concentrate on numerical simulations setting the requirements on the design and supporting the choice of machine parameters.
  • An electron lens is planned for the Fermilab Integrable Optics Test Accelerator as a nonlinear element for integrable dynamics, as an electron cooler, and as an electron trap to study space-charge compensation in rings. We present the main design principles and constraints for nonlinear integrable optics. A magnetic configuration of the solenoids and of the toroidal section is laid out. Singleparticle tracking is used to optimize the electron path. Electron beam dynamics at high intensity is calculated with a particle-in-cell code to estimate current limits, profile distortions, and the effects on the circulating beam. In the conclusions, we summarize themore » main findings and list directions for further work.« less