CBB transfers its technology to national labs and to industry.

Questions on our available technology can be emailed to Joan Curtiss

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.
• Methods for a photocathode that can operate for >1 weekk 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.
• 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. 
• 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.
• 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.)
• 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).
• 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.
• 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.
• 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. 
• Loadlock for photocathode sharing (Radiabeam, Santa Monica, CA): Successfully transferred two UHV photocathode suitcase delivery systems based on CBB PI in-house prototypes.
• 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.
• 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.
• CBB ML-based tuning of an electron beam applied to hadron cooling at LEReC at RHIC.
• 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))
• 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.
• High-performance niobium SRF cavity. A niobium SRF cavity incorporating CBB advances is in operation at NSLS-II at BNL. 
• Cryocooled SRF systems. JLAB, Fermilab and Cornell are building cryocooled SRF systems based on Nb₃Sn for applications such as waste treatment.  All use CBB methods for Nb₃Sn growth.
• Chip inspection methods. DARPA is funding the application of bright CBB electron beams at UCLA to microelectronics testing.