December 2004
Members of the LENS technical and professional staff make final adjustments to the LENS accelerator control systems in preparation to turn on the accelerator for the first time.

December 2004
First proton beam through the 7MeV Linear accelerator at LENS! The three oscilloscope traces are RFQ and DTL field pick-ups (top traces), and proton current on an instrumented beam stop (bottom trace).

December 2004
First neutrons detected at LENS, using the 2-D detector on the SANS instrument.

December 2004
Members of the LENS team watch the accelerator console as protons are guided down the proton beam line for the first time at approximately 9:00 PM on 15 December.

Shown are Paul Sokol, Laddie Derenchuk, Dennis Friesel, Keith Solberg, Sasha Bogdanov, and David Baxter.

December 2004
LENS proton beam line display showing proton current on collimators while the focussing and stearing magnets were being tuned.

December 2004
Members of the team celebrate first neutrons produced at 10:53 PM on 15 December. The output from the SANS detector is visible on the left computer monitor.

Shown are Piotr Zolnierczuk (off camera on the left), David Baxter, Ron Kupper, Mark Leuschner, Paul Sokol, Sasha Bogdanov, Eric James, Keith Solberg, Laddie Derenchuk, and Helmut Kaiser (off camera on the right).

June 2005
Neutron spectrum taken at LENS with an empty moderator vessel (therefore this represents the neutrons coming from the water reflector only). The blue and red curves show the need to take into account the finite neutron pulse width (arising from both the 0.15 msec proton pulse width and the emission time distribution from the moderator) to fit the data at higher energies. The vertical scale has been established with gold-foil activation and the level of agreement between the data and our MCNP model is gratifying.