Gabriel Marcus

Gabriel Marcus Email and Phone Number

Senior Scientist at a stealth mode startup @
Gabriel Marcus's Location
United States, United States
Gabriel Marcus's Contact Details

Gabriel Marcus work email

Gabriel Marcus personal email

n/a
About Gabriel Marcus

I am a physicist with expertise in particle accelerators and free-electron lasers (FELs). I have held a variety of roles including Senior Scientist, Principal Investigator, and Project Manager. I have led various R&D teams and pursued novel technology development and deployment at X-ray FEL facilities for state-of-the-art scientific applications. I am currently at a stealth mode startup.

Gabriel Marcus's Current Company Details
Startup

Startup

Senior Scientist at a stealth mode startup
Gabriel Marcus Work Experience Details
  • Startup
    Senior Scientist
    Startup Jul 2022 - Present
  • Slac National Accelerator Laboratory
    Lead Scientist
    Slac National Accelerator Laboratory Jul 2021 - Jul 2022
    Menlo Park, California, Us
    ๐—ฃ๐—ฟ๐—ผ๐—ท๐—ฒ๐—ฐ๐˜ ๐—œ๐—ป๐˜๐—ฒ๐—ด๐—ฟ๐—ฎ๐˜๐—ถ๐—ผ๐—ป ๐— ๐—ฎ๐—ป๐—ฎ๐—ด๐—ฒ๐—ฟ ๐—ณ๐—ผ๐—ฟ ๐˜๐—ต๐—ฒ ๐—–๐—ฎ๐˜ƒ๐—ถ๐˜๐˜†-๐—•๐—ฎ๐˜€๐—ฒ๐—ฑ ๐—ซ-๐—ฟ๐—ฎ๐˜† ๐—™๐—ฟ๐—ฒ๐—ฒ-๐—˜๐—น๐—ฒ๐—ฐ๐˜๐—ฟ๐—ผ๐—ป ๐—Ÿ๐—ฎ๐˜€๐—ฒ๐—ฟ (๐—–๐—•๐—ซ๐—™๐—˜๐—Ÿ) ๐—ฅ&๐—— ๐—ฃ๐—ฟ๐—ผ๐—ท๐—ฒ๐—ฐ๐˜.โ€ข Defined overall project scope and deliverables and managed revisionsโ€ข Managed, integrated and tracked multi-laboratory (SLAC and ANL) project plans โ€ข Tracked overall progress (milestones met relative to plan, etc.) and reported to key stakeholders (DOE funding program and SLAC/ANL lab management)๐—ฃ๐—œ (๐—ฆ๐—Ÿ๐—”๐—–) ๐—ณ๐—ผ๐—ฟ ๐˜๐—ต๐—ฒ ๐—–๐—•๐—ซ๐—™๐—˜๐—Ÿ ๐—ฝ๐—ฟ๐—ผ๐—ท๐—ฒ๐—ฐ๐˜.The scientific objectives of this project included the design and construction of a rectangular hard x-ray cavity in the LCLS-II undulator hall; perform two-pass gain measurements and cavity ringdown measurements using electron bunches from the CuRF linac; and demonstrate the requisite X-ray optical cavity tolerance and stability requirements for future operation with a high repetition rate superconducting RF linac.โ€ข Defined project objectives and provided scientific and technical leadershipโ€ข Led the development of overall physics requirementsโ€ข Defined the project plan (scope, budget, schedule) and deliverables along with SLAC and ANL co-PIsโ€ข Prepared and led the preliminary testing and commissioning efforts, including the two chicane designs and two-bunch operation.๐—ฃ๐—œ ๐—ผ๐—ณ ๐˜๐—ต๐—ฒ ๐—ค-๐˜€๐˜„๐—ถ๐˜๐—ฐ๐—ต๐—ฒ๐—ฑ ๐—ซ๐—ฅ๐—”๐—™๐—˜๐—Ÿ ๐—ฅ&๐—— ๐—ฝ๐—ฟ๐—ผ๐—ท๐—ฒ๐—ฐ๐˜.A Laboratory Directed Research and Development (LDRD) project aimed at developing key enabling technologies for an FEL scale regenerative amplifier free-electron laser by conducting cavity optics R&Dโ€ข Investigated various active and passive X-ray crystal high power output coupling modalities. Successfully demonstrated microbunch rotation and the use of diamond transmission gratings as two passive strategies. Investigated boron doped synthetic diamond Bragg mirrors for active Q-switching.โ€ข Demonstrated world record storage and stability of femtosecond hard x-ray pulses in a Bragg cavity at LCLS
  • Slac National Accelerator Laboratory
    Staff Scientist
    Slac National Accelerator Laboratory Nov 2018 - Jul 2021
    Menlo Park, California, Us
    ๐—ฃ๐—ฟ๐—ผ๐—ท๐—ฒ๐—ฐ๐˜ ๐—บ๐—ฎ๐—ป๐—ฎ๐—ด๐—ฒ๐—ฟ ๐—ฎ๐—ป๐—ฑ ๐—ฝ๐—ฟ๐—ผ๐—ท๐—ฒ๐—ฐ๐˜ ๐˜€๐—ฐ๐—ถ๐—ฒ๐—ป๐˜๐—ถ๐˜€๐˜ ๐—ณ๐—ผ๐—ฟ ๐˜๐—ต๐—ฒ ๐˜€๐—ผ๐—ณ๐˜ ๐˜…-๐—ฟ๐—ฎ๐˜† ๐˜€๐—ฒ๐—น๐—ณ-๐˜€๐—ฒ๐—ฒ๐—ฑ๐—ถ๐—ป๐—ด-๐—œ๐—œ ๐—ฝ๐—ฟ๐—ผ๐—ท๐—ฒ๐—ฐ๐˜ ๐—ฎ๐˜ ๐—Ÿ๐—–๐—Ÿ๐—ฆ/๐—Ÿ๐—–๐—Ÿ๐—ฆ-๐—œ๐—œโ€ข Defined scope, cost, and schedule to move and upgrade the SXRSS infrastructure in preparation for high repetition rate electron bunches from LCLS-II.โ€ข Managed and supervised the upgrade plans including optics cooling, beam overlap diagnostic redesign, and controls architecture and device improvements.๐—ฃ๐—œ ๐—ณ๐—ผ๐—ฟ ๐˜๐—ต๐—ฒ ๐—ค-๐˜€๐˜„๐—ถ๐˜๐—ฐ๐—ต๐—ฒ๐—ฑ ๐—ฟ๐—ฒ๐—ด๐—ฒ๐—ป๐—ฒ๐—ฟ๐—ฎ๐˜๐—ถ๐˜ƒ๐—ฒ ๐—ฎ๐—บ๐—ฝ๐—น๐—ถ๐—ณ๐—ถ๐—ฒ๐—ฟ ๐—ณ๐—ฟ๐—ฒ๐—ฒ-๐—ฒ๐—น๐—ฒ๐—ฐ๐˜๐—ฟ๐—ผ๐—ป ๐—น๐—ฎ๐˜€๐—ฒ๐—ฟ ๐—Ÿ๐——๐—ฅ๐—— ๐—ฝ๐—ฟ๐—ผ๐—ท๐—ฒ๐—ฐ๐˜โ€ข See above for more details.โ€ข Supported 1 Stanford physics graduate student and ~ 1 FTE equivalent effort distributed over a number of subject matter experts (accelerator, optics).
  • Slac National Accelerator Laboratory
    Associate Staff Scientist
    Slac National Accelerator Laboratory Feb 2015 - Nov 2018
    Menlo Park, California, Us
    ๐—ฃ๐—ฟ๐—ผ๐—ท๐—ฒ๐—ฐ๐˜ ๐˜€๐—ฐ๐—ถ๐—ฒ๐—ป๐˜๐—ถ๐˜€๐˜ ๐—ฎ๐—ป๐—ฑ ๐—ฝ๐—ต๐˜†๐˜€๐—ถ๐—ฐ๐—ถ๐˜€๐˜ ๐—ณ๐—ผ๐—ฟ ๐˜๐—ต๐—ฒ ๐—Ÿ๐—–๐—Ÿ๐—ฆ-๐—œ๐—œ ๐˜€๐—ผ๐—ณ๐˜ ๐˜…-๐—ฟ๐—ฎ๐˜† ๐˜€๐—ฒ๐—น๐—ณ-๐˜€๐—ฒ๐—ฒ๐—ฑ๐—ถ๐—ป๐—ด-๐—œ๐—œ ๐—ฝ๐—ฟ๐—ผ๐—ท๐—ฒ๐—ฐ๐˜ ๐˜‚๐—ฝ๐—ด๐—ฟ๐—ฎ๐—ฑ๐—ฒSee above for details.๐—Ÿ๐—ฒ๐—ฎ๐—ฑ ๐—ณ๐—ฟ๐—ฒ๐—ฒ-๐—ฒ๐—น๐—ฒ๐—ฐ๐˜๐—ฟ๐—ผ๐—ป ๐—น๐—ฎ๐˜€๐—ฒ๐—ฟ ๐—บ๐—ผ๐—ฑ๐—ฒ๐—น๐—ถ๐—ป๐—ด ๐—ฝ๐—ต๐˜†๐˜€๐—ถ๐—ฐ๐—ถ๐˜€๐˜ ๐—ณ๐—ผ๐—ฟ ๐—Ÿ๐—–๐—Ÿ๐—ฆ-๐—œ๐—œ ๐—ฎ๐—ป๐—ฑ ๐—Ÿ๐—–๐—Ÿ๐—ฆ-๐—œ๐—œ-๐—›๐—˜โ€ข Interface with accelerator physics beam dynamics group to ensure future FEL performance met requirements.โ€ข Define subsystem requirements related to FEL performance.โ€ข Provide regular reports and updates to LCLS-II and LCLS-II-HE project stakeholders at DOE meetings, Facility Advisory Committee meetings, Director's reviews, and internal project reviews.๐—Ÿ๐—ฒ๐—ฎ๐—ฑ ๐—ถ๐—ป๐˜ƒ๐—ฒ๐˜€๐˜๐—ถ๐—ด๐—ฎ๐˜๐—ผ๐—ฟ ๐—ผ๐—ป ๐˜๐—ต๐—ฒ ๐˜€๐—ผ๐—ณ๐˜ ๐˜…-๐—ฟ๐—ฎ๐˜† ๐˜€๐—ฒ๐—น๐—ณ-๐˜€๐—ฒ๐—ฒ๐—ฑ๐—ถ๐—ป๐—ด ๐˜€๐—ฝ๐—ฒ๐—ฐ๐˜๐—ฟ๐—ฎ๐—น ๐—ฝ๐—ฒ๐—ฑ๐—ฒ๐˜€๐˜๐—ฎ๐—น ๐จ๐ซ๐ข๐ ๐ข๐ง ๐—ฟ๐—ฒ๐˜€๐—ฒ๐—ฎ๐—ฟ๐—ฐ๐—ต ๐—ฝ๐—ฟ๐—ผ๐—ท๐—ฒ๐—ฐ๐˜โ€ข Lead and coordinate the team investigating the origin and growth properties of the spectral pedestal observed in self-seeded FEL amplification.โ€ข Lessons learned applied to SXRSS upgrade projects.๐—ฆ๐—ถ๐—บ๐˜‚๐—น๐—ฎ๐˜๐—ถ๐—ผ๐—ป ๐˜€๐˜‚๐—ฏ๐—ฐ๐—ผ๐—บ๐—บ๐—ถ๐˜๐˜๐—ฒ๐—ฒ ๐—น๐—ฒ๐—ฎ๐—ฑ ๐—ณ๐—ผ๐—ฟ ๐˜๐—ต๐—ฒ ๐—Ÿ๐—–๐—Ÿ๐—ฆ ๐—ฆ๐—ฒ๐—ฒ๐—ฑ๐—ถ๐—ป๐—ด ๐—ง๐—ฎ๐˜€๐—ธ๐—ณ๐—ผ๐—ฟ๐—ฐ๐—ฒโ€ข Was a member of the LCLS seeding taskforce, whose responsibility it was to explore the various seeding modalities available to the LCLS-II project and to recommend the best option for deployment.โ€ข Led the simulation subcommittee responsible for evaluating seeded FEL performance using numerical particle simulations.
  • Slac National Accelerator Laboratory
    Research Associate
    Slac National Accelerator Laboratory Oct 2013 - Feb 2015
    Menlo Park, California, Us
    ๐—ฃ๐—ผ๐˜€๐˜๐—ฑ๐—ผ๐—ฐ๐˜๐—ผ๐—ฟ๐—ฎ๐—น ๐—ฟ๐—ฒ๐˜€๐—ฒ๐—ฎ๐—ฟ๐—ฐ๐—ต๐—ฒ๐—ฟ ๐—ถ๐—ป ๐˜๐—ต๐—ฒ ๐—™๐—˜๐—Ÿ ๐—ฝ๐—ต๐˜†๐˜€๐—ถ๐—ฐ๐˜€ ๐—ด๐—ฟ๐—ผ๐˜‚๐—ฝ ๐—ถ๐—ป ๐˜๐—ต๐—ฒ ๐—”๐—ฐ๐—ฐ๐—ฒ๐—น๐—ฒ๐—ฟ๐—ฎ๐˜๐—ผ๐—ฟ ๐——๐—ถ๐—ฟ๐—ฒ๐—ฐ๐˜๐—ผ๐—ฟ๐—ฎ๐˜๐—ฒโ€ข Led the numerical evaluation of various free-electron laser beamlines for the LCLS-II project. Reported performance estimates at regular DOE, Facility Advisory, and Director's reviews.โ€ข Developed and studied advanced free-electron laser concepts for LCLS and LCLS-II.โ€ข Assisted in machine development studies of the LCLS, including novel soft x-ray self-seeding and harmonic lasing experiments.
  • Lawrence Berkeley National Laboratory
    Accelerator Physicist Postdoctoral Fellow
    Lawrence Berkeley National Laboratory Sep 2012 - Oct 2013
    Berkeley, Ca, Us
    โ€ข FEL modeling physicist for the proposed Next Generation Light Source at LBNL. Reported FEL performance at regular DOE and Director's reviews.
  • Ucla
    Graduate Student Researcher
    Ucla Sep 2006 - Aug 2012
    Los Angeles, Ca, Us
    โ€ข Assisted in the development of analytic models to quickly evaluate the FEL collective instability using a minimal number of scaled parameters that individually represent essential system features.โ€ข Designed and constructed an ultra-fast Frequency-Resolved Optical Gating (FROG) diagnostic that is based on a transient-grating (TG) third-order nonlinear optical process.โ€ข Implemented the TG FROG diagnostic at an advanced FEL test facility to measure the detailed longitudinal profile of longitudinally coherent and single-spike radiation pulses from a FEL using an energy-chirped electron beam and a tapered undulator. โ€ข Developed Matlab code for image processing and reconstruction using advanced FROG algorithms.
  • The University Of Arizona
    Undergraduate Research Assistant
    The University Of Arizona May 2005 - May 2006
    Tucson, Arizona, Us
    โ€ข Assisted in the development of a theoretical model to understand how collective flagellarhydrodynamics determine fluid flow around the volvocalean green algae Volvox.โ€ข Assisted in the experimental measurements of this fluid flow using particle image velocimetry.
  • The University Of Arizona
    Nasa Space Grant Undergraduate Research Assistant
    The University Of Arizona Aug 2003 - Aug 2004
    Tucson, Arizona, Us
    โ€ข Investigated the thermodynamic processes of liquefied simple organic materials to search for the acceleration of chemical reactions with applications to the surface chemistry of Europa using gas chromatography and UV-VIS spectrophotometry.

Gabriel Marcus Skills

Physics Matlab Latex Mathematica Scientific Computing Simulations Numerical Analysis Fluid Dynamics Algorithms Experimentation Image Processing Mathematical Modeling

Gabriel Marcus Education Details

  • Ucla
    Ucla
    Physics
  • University Of Arizona
    University Of Arizona
    Physics
  • University Of Arizona
    University Of Arizona
    Mathematics

Frequently Asked Questions about Gabriel Marcus

What company does Gabriel Marcus work for?

Gabriel Marcus works for Startup

What is Gabriel Marcus's role at the current company?

Gabriel Marcus's current role is Senior Scientist at a stealth mode startup.

What is Gabriel Marcus's email address?

Gabriel Marcus's email address is gm****@****lbl.gov

What schools did Gabriel Marcus attend?

Gabriel Marcus attended Ucla, University Of Arizona, University Of Arizona.

What skills is Gabriel Marcus known for?

Gabriel Marcus has skills like Physics, Matlab, Latex, Mathematica, Scientific Computing, Simulations, Numerical Analysis, Fluid Dynamics, Algorithms, Experimentation, Image Processing, Mathematical Modeling.

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