2005 NIST SBIR request for proposals for XPS microscope.
2005 R. Browning Consultants responds to RFP.
Ideas based on Stanford University's MicroESCA at SLAC.
2006 Good reviews on proposal 100%. Insufficient funds this FY.
2006 Second RFQ, and second proposal, 6 month SBIR PHASE I awarded.
2006 Calculations show sudden magnet field termination still gives usable
image information. This the key difference to MicroESCA.
2006 Early prototype made to test ideas.
2007 Phase I report, PHASE II proposal, 2 year PHASE II awarded.
2008 SBIR Phase II started. MicroESCA's superconducting magnet and CHA
loaned to project by Stanford University.
2008 Parts for prototype made. Calculations show very good imaging properties
with no swirl.
Presentation to NSLS committee. XPS microscope project given the use of
U4A for testing.
2009 Move to National Synchrotron Light Source, Brookhaven National
2009 Design and build Proof-Of-Principle microscope installation at U4A.
2010 New final mirror added to U4A, Beam onto sample.
August: First fill of superconducting magnet He Dewer.
September: First test of magnet to 900 Gauss.
September: First photoelectrons around the system.
October: Find magnetic inclusion in flange causes high distortion,
fixed with Fe ring. Magnetic field to 1.8 Tesla.
October: First images, Au grids and Silk threads.
December: Magnetic Vector Potential seen as basis of microscope
2011 January: Magnetic Vector Potential theory of operation developed.
March: VPPEM acronym created.
2012 Improvements to microscope. Alighment of beamline to improve
performance. Understanding the low voltage spectra.
2013 Upgrade performance of instrument. Start to get high spatial
resolution elemental images.
2014 NSLS shuts down.
2015 Equipment moved to NSLS II
2016 Start building VPPEM version II. Start designing rotating platform
to access the two NIST beam lines
2017 VPPEM version II complete. Begin testing using electron beam.
Contract to buy larger radius CHA which can possibly access both
2018 Begin work on VPPEM version III. With larger CHA and two
apertures though the system. Compact superconducting magnet
designed and built, 2 Tesla.
2019 NIST Beamlines opened. VPPEM Instrument Readiness Review
2020 Both beams into magnet volume and coincident at sample