1 / 10

Accelerator Options for a FNAL Low-Energy Antiproton Facility

This talk proposes accelerator options for low-energy antiproton physics, supporting charmonium and thermal/stopped antiproton studies. It discusses momentum range, luminosity improvements, solid hydrogen target, low beta lattice, on-energy injection, and solid hydrogen target building. It also explores main injector deceleration, attaining lower momenta, attaching a small deceleration/cooling ring to the racetrack accelerator, and MI deceleration. Lastly, it outlines Hbar Tech applications in nuclear thermal rocket fuel element R&D, antiproton storage and transportation, deep-space propulsion design validation, active interrogation for smuggled nuclear materials, and antiproton medical therapies.

larrywood
Download Presentation

Accelerator Options for a FNAL Low-Energy Antiproton Facility

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Accelerator Options for aFNAL Low-EnergyAntiproton Facility Dr. Gerald P Jackson Hbar Technologies, LLC gjackson@hbartech.com

  2. Introduction • This talk assumes 8 GeV stacking in the current Antiproton Source, without the Recycler. • This talk proposes accelerator options for low-energy antiproton physics wherein the physics experiment is not in the Accumulator tunnel, leaving the Source available for 24/7 production. • There are two regimes of antiproton physics supported by these accelerator options: • Charmonium studies such as Kaplan et. al. • Thermal/stopped antiproton studies a la Phillips et. al. and Hbar Tech

  3. New Racetrack Storage Ring • Located at MI-30 • Use existing Recycler stochastic and electron cooling infrastructure • Put proton-antiproton collision experiment in other racetrack straight section • Use MI as a transfer line (Post Neutrino Program – decelerate in MI for on-energy injection during physics runs)

  4. Momentum Range: 0.5 to 9 GeV/c

  5. Luminosity Improvements • Electron cooling – smaller momentum spread • Instrumentation & Racetrack Shape – better momentum calibration • Adequate pit size – better detection efficiency • Solid Hydrogen Target – target halo particles, minimize transverse and longitudinal beam diffusion, improve antiproton lifetime • Low beta lattice at collision point – minimize transverse antiproton beam diffusion • On-energy injection – much higher duty cycle

  6. Solid Hydrogen Target Building and testing a prototype apparatus is a nicely sized R&D project that Hbar Tech would like to pursue.

  7. Main Injector Deceleration • Last studies in 2000 • Decelerated to 3 GeV/c • Limit was longitudinal bucket area shrinkage • No power supply issues • Since 2000, Hbar has developed an RF manipulation to eliminate bucket area shrinkage • Estimate is that 2 GeV/c is easily attainable, and 1Gev/c is possible

  8. Attaining Lower Momenta • Main Injector deceleration and extraction up an existing carrier pipe into a dedicated facility housing a cooling ring capable of further momentum reductions • Above facility with a much smaller ring and employing a degrader to dramatically reduce the beam momentum injected into that smaller ring • Attach a small deceleration/cooling ring to the racetrack accelerator outlined earlier • Decelerate antiprotons up the high-energy end (ILC section from 0.6 to 8 GeV) of the Project-X linac and then steer them out into a dedicated cooling/deceleration ring

  9. MI Deceleration Below 1 GeV/c

  10. Hbar Tech Applications • Nuclear Thermal Rocket Fuel Element R&D [funded by NASA] • Test nuclear fuel elements with depleted uranium • Simulate fission by exposing elements to antiprotons • Antiproton Storage and Transportation [funded by DARPA] • Validate new vacuum technologies • Validate new confinement concepts • Deep-space Propulsion Design Validation [funded by NASA] • Validate revolutionary propulsion system design wherein surface fissions of a depleted uranium sail create thrust, speeds up to 0.1c • Active Interrogation for Smuggled Nuclear Materials [interest from DHS] • Energetic pions from annihilations induce fission in nearby hidden uranium and plutonium • Antiproton Medical Therapies

More Related