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All-optical structuring of laser-driven proton beam profiles

Journal Article · · Nature Communications
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  1. Helmholtz-Zentrum Dresden - Rossendorf, Dresden (Germany); Technische Univ. Dresden, Dresden (Germany)
  2. Helmholtz-Zentrum Dresden - Rossendorf, Dresden (Germany)
  3. SLAC National Accelerator Lab., Menlo Park, CA (United States); Univ. of Alberta, Edmonton, AB (Canada)
  4. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  5. European XFEL GmbH, Schenefeld (Germany)
  6. Helmholtz Institute Jena, Jena (Germany)
+ Show Author Affiliations
Here, extreme field gradients intrinsic to relativistic laser-interactions with thin solid targets enable compact MeV proton accelerators with unique bunch characteristics. Yet, direct control of the proton beam profile is usually not possible. Here we present a readily applicable all-optical approach to imprint detailed spatial information from the driving laser pulse onto the proton bunch. In a series of experiments, counter-intuitively, the spatial profile of the energetic proton bunch was found to exhibit identical structures as the fraction of the laser pulse passing around a target of limited size. Such information transfer between the laser pulse and the naturally delayed proton bunch is attributed to the formation of quasi-static electric fields in the beam path by ionization of residual gas. Essentially acting as a programmable memory, these fields provide access to a higher level of proton beam manipulation.
Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24)
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1490650
Alternate ID(s):
OSTI ID: 1560571
Journal Information:
Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 9; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Figures / Tables (4)

Fig. 1(p. 3)figure Fig. 1
Fig. 2(p. 3)figure Fig. 2
Fig. 3(p. 5)figure Fig. 3
Fig. 4(p. 6)figure Fig. 4

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS