Computational Prediction of Mutations for Altered Sensitivity and 7 Specificity of a Sensor to Detect Peak Concentration of Lipids in Algae CHEMISTRY DIVISION

Beam position monitors are the primary diagnostic in the Proton Storage Ring (PSR) at Los Alamos National Laboratory (LANL). Injecting into a circular accelerator for one turn can be approximated transversely as single-­‐particle injection with initial betatron amplitude and angle, x0 and x0’ respectively, also known as the injection offset. The turn-­‐by-­‐turn beam position data of the single-­‐turn injected beam allows measurement of the betatron tune, closed orbit, and injection offset (the x0 and x0’ at the injection point). However in accumulation/production mode, multiple turns are injected into the accumulator ring, the transverse phase space is quickly filled, so there is no coherent transverse betatron motion, and only the closed orbit may be measured by the beam position monitors. The important injection offset parameter, which determines the accumulated beam size and is very sensitive to steering upstream of the ring, is not measurable during production. We describe here our approach for measuring the injection offset during accumulation/production mode machine cycles by injecting an additional “diagnostic” beam pulse into the PSR ~50 us after the accumulated beam is extracted. We also study the effects of increasing the length of the rf gate in the linac to accommodate the “diagnostic” pulse on the beam position, transverse size, and loss.