Multi-beam RF Accelerators for Ion Implantation

Seidl, P.A.; Persaud, A.; Domenico, Diego Di; Andreasson, Johan O. L.; Ji, Qing; Liang, W. Y.; Ni, Di; Oberson, Daniel; Raymond, Luke; Scharfstein, Gregory; Todd, A.M.M.; Lal, Amit; Schenkel, T.

doi:10.1109/iit.2018.8807975

Cited by 2 publications

(1 citation statement)

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“…The prototype demonstrated injection and transport of a 5-10 uA beam in a 3x3 beam array, and achieved ion acceleration of 0.5 kV/gap, for a gradient of about 0.3 MV/m [70], [71]. Building on these results, the team has used a compact, near-board RF driver to achieve up to 2.6 kV per gap [72]. While the performance of the prototype was relatively modest, the critical elements for the scalable MEMS design were established: a parallel array of beamlets, enabling high system-level current density, and the modular "stacking" of MEMS acceleration stages to enable high beam energy.…”

Section: California Institute Of Technology/los Alamos National Lab: ...mentioning

confidence: 96%

Retrospective of the ARPA-E ALPHA Fusion Program

et al. 2019

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This paper provides a retrospective of the ALPHA (Accelerating Low-cost Plasma Heating and Assembly) fusion program of the Advanced Research Projects Agency-Energy (ARPA-E) of the U.S. Department of Energy. ALPHA's objective was to catalyze research and development efforts to enable substantially lower-cost pathways to economical fusion power. To do this in a targeted, focused program, ALPHA focused on advancing the science and technology of pulsed, intermediate-density fusion approaches, including magneto-inertial fusion and Z-pinch variants, that have the potential to scale to commercially viable fusion power plants. The paper includes a discussion of the origins and framing of the ALPHA program, a summary of project status and outcomes, a description of associated technology-transition activities, and thoughts on a potential follow-on ARPA-E fusion program. Introduction:In 2014 the Advanced Research Projects Agency-Energy (ARPA-E) of the U.S. Department of Energy (DOE) launched a new research program on low-cost approaches to fusion-energy development [1]. The "Accelerating Low-Cost Plasma Heating and Assembly" (ALPHA) program set out to enable more rapid progress towards fusion energy by establishing a wider range of technological options that could be pursued with smaller, lower-cost experiments, short development and construction times, and high experimental throughput. Mainstream fusion research generally refers to magnetically or inertially confined fusion, both of which require expensive facilities for reasons briefly described below and explored in more detail in several books[2] [3]. ALPHA focused on magneto-inertial fusion (MIF), a class of pulsed fusion approaches with fuel densities in between those of magnetic and inertial fusion[4], [5] [6]. This paper presents a brief background on the origins of the ALPHA program, the results achieved by ALPHA-funded teams, and a look ahead to potential next steps for low-cost fusion development. OriginsARPA-E's mission is to develop transformational new energy technologies [7]. While DOE has pursued fusion energy as a potentially transformational opportunity for decades, ARPA-E had not supported any work in fusion prior to the ALPHA program. This was in part due to a perception that fusion was inherently the realm of "big science" and that ARPA-E, which runs relatively small, targeted, short-term programs across a wide spectrum of energy technologies-did not have a role to play in that development. In launching ALPHA, ARPA-E sought to change this dynamic and bring new players into the field -both in terms of the kinds of teams doing fusion development (e.g., smaller groups and private startups), and in terms of the sources of funding (e.g., private investors). The ALPHA program

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Section: California Institute Of Technology/los Alamos National Lab: ...mentioning

confidence: 96%