CBB transfers its technology to national labs and to industry.

Questions on our available technology can be emailed to the scientist listed below.

Incorporation of other CBB discoveries into new generations of accelerators or commercialization as products.

• High performance photocathodes. A NaKSb photocathode has demonstrated good lifetime in a working photoinjector and showed high oxygen tolerance by CsTe photocathodes. CBB scientists have transferred their growth methods to SLAC for potential use in the LCLS-II-HE x-ray laser. (Professor Jared Maxson)
• Methods for a photocathode that can operate for >1 week with MTE <35 meV at 50 𝜇J/cm2 laser fluence and high field (>100 MV/m) for high peak current applications such as compact XFELs. These photocathode capabilities have been shared with the UCXFEL team. (Professor Jared Maxson)
• Methods for a photocathode that can operate for >1 week with MTE <100 meV and QE>1% under high average current (>50 mA) conditions for hadron coolers and colliders. Sb0O-Cs GaAs activation know-how was transferred to Jefferson National Laboratory. (Professor Jared Maxson)
• Photoemission source with sub-100 nm spot size and MTE approaching 25 meV. Sub-100 nm spot size has been successfully demonstrated, which is a first step toward the use of photoemission guns in microscopes. (Professor Siddharth Karkare)
• Methods for producing non-Nb, high efficiency surfaces with cooling power <1.5 kW/(active meter) or capable of sustaining accelerating fields > 25 MV/m. Patent application has been filed for the use of ZrNb alloys for superconducting applications (Z. Sun, T. Oseroff, M. Liepe, “ZrNb Alloyed Surface as Superconducting Material,” U.S. Patent Application 18/507843, November 13, 2023.)(Professor Matthias Liepe)
• ML techniques for tuning aberrations in electron microscopes. Replaces the regular maintenance interventions by microscope company specialists that are required to keep the conventional alignment software operational. Collaborations continue with Corrected Electron Optical Systems (CEOS) and Thermo Fisher Scientific (TFS). (Professor David Muller)
• A lossless monochromator for electron microscopy has been developed by CBB faculty in a collaboration between accelerator physicists and electron microscopists. A patent application has been filed, and TFS has indicated interest in this technology.  (Professor Jared Maxson)and (Professor David Muller)
• Modeling tools for photocathodes  (Tech-X, Boulder CO, SBIR-II):  CBB Monte-Carlo codes developed for modeling photoemission from high QE semiconductor cathodes were incorporated into PIC software VSIM sold by Tech-X. (Professor Siddharth Karkare)
• High Brightness Source Optimization (Thermo-Fisher Scientific, Waltham MA): CBB provided advice and consulting for technology incorporated into the new high-brightness TFS Spectra Cold-Field-Emission microscopes.  (Professor Jared Maxson)and (Professor David Muller)
• Loadlock for photocathode sharing (Radiabeam, Santa Monica, CA): Successfully transferred two UHV photocathode suitcase delivery systems based on CBB PI in-house prototypes. (Professor Jared Maxson)
• Optical stochastic cooling CBB contributed the delay system that enabled the demonstration of optical stochastic cooling (OSC) at Fermilab’s IOTA. FNAL scientists now use CBB’s Elegant-based simulation of optical stochastic cooling in the development of future stages of OSC. (Professor Philippe Piot)
• CBB stochastic space charge algorithm is capable of accounting for binary collisions during the emission process. The algorithm is now added as a module in the widely used General Particle Tracer (GPT) program.(Professor Philippe Piotand (Professor Young-Kee Kim)
• CBB ML-based tuning of an electron beam applied to hadron cooling at LEReC at RHIC.(Professor Georg Hoffstaetter de Torquat)
• ML on exascale HPCs for simulating atomic processes. Ultra-Fast Force Field (UF3) codes provides accurate and efficient models and is now incorporated through CPU and GPU implementation for the LAMMPS code (Sandia). Available on Github (Ultra-Fast Force Fields (UF3))(Professor Richard Hennig)
• High gradients in cold copper cavities were first demonstrated in a SLAC/CBB collaboration. This technology is now being developed by SLAC and others for applications such as a high energy linear collider and an injector to CESR. (Professor Jamie Rosenzweig)
• High-performance niobium SRF cavity. A niobium SRF cavity incorporating CBB advances is in operation at NSLS-II at BNL.  (Professor Matthias Liepe)
• Cryocooled SRF systems. JLAB, Fermilab and Cornell are building cryocooled SRF systems based on Nb₃Sn for applications such as waste treatment. (Professor Matthias Liepe)
• Electrochemical growth of high-quality Nb3Sn films. CBB’s novel Nb3Sn growth process based on electrochemically growth has been shared with the community and is being used as part of a CBB student’s DOE SCGSR project at Fermilab. (Professor Matthias Liepe)
•  High-efficiency Nb3n cavities. CBB’s methods for improved vapor-diffusion based Nb3Sn growth are being adopted by SRF researchers worldwide. (Professor Matthias Liepe)
• Chip inspection methods. DARPA is funding the application of bright CBB electron beams at UCLA to microelectronics testing.  (Professor Pietro Musumeci)