Data

NOTICE: The following data (figures and tables) on the JENSA gas jet target are taken from the JENSA@ORNL technical publication (in preparation) and therefore CANNOT be used without permission.

                         Pressure profile as measured along the JENSA gas jet target system. The pressure gradient
inside of each aperture is treated as a discrete step for the purposes of display. The blue star at the jet location
shows the measured pressure at the inlet of the jet nozzle; the solid blue curve at the jet location shows the derived
pressure of the jet after expansion into the chamber (in other words, as “seen” by a beam). Note the log scale on
the vertical axis.

                          Energy loss profiles for jets of 200 (panels a,d), 300 (panels b,e), and 400psi (panels c,f)
N2 gas. The black curve and upward triangles are the profile in the upper back-side strip, and the blue curve and
downward triangles are for the lower back-side strip. Panels (a,b,c) show the jet profile for Jet Nozzle A, Inner
Receiver A, and Outer Receiver B; the smaller Outer Receiver A produced identical jet profiles, as is demonstrated
by the green circles in Panel (c). Panels (d,e,f) show the jet profile for Jet Nozzle B with Inner Receiver A and Outer
Receiver B (see paper for more information).

Energy loss profiles for jets of 200 (panel a), 300 (panel b), and 400psi (panel
c) helium gas. The black curve and upward triangles are the profile in the upper back-side strip, and the blue curve
and downward triangles are for the lower back-side strip. In all panels is shown the jet profile for Jet Nozzle A, Inner
Receiver A, and Outer Receiver A; the larger Outer Receiver B produces identical jet profiles (see paper for more information).

                          Jet areal densities versus jet inlet pressure for Jet Nozzle A, for all three gas species tested.
The left panels represent the density in the “top” ∼4mm of the jet, and the right panels show the ∼4mm below this.
The black dots indicate the average areal density over the central 2mm width of the jet, the red diamonds are the
central 3mm of the jet, and the green squares are the average over the full 4mm width of the jet.

                          Jet areal densities versus jet inlet pressure for Jet Nozzle B, for the two gas species tested
with this jet nozzle. The left panels represent the density in the “top” ∼4mm of the jet, and the right panels show
the ∼4mm below this. The black dots indicate the average areal density over the central 2mm width of the jet, the
red diamonds are the central 3mm of the jet, the green squares are the central 4mm of the jet, and the blue triangles
are the average density over the entire 5mm width of the jet.