Transverse modes in the 3.9 GHz cavities, designed and fabricated by FNAL, are reported on. These modes have the potential to cause significant emittance dilution if they are not sufficiently suppressed. Recent probebased-experiments have indicated significant discrepancies between modes predicted in stand-alone 9cell cavities compared to those in 4-cavity modules. We employ the code HFSS [1] t...

School of Graduate Studies The University of Alabama in Huntsville Degree Doctor of Philosophy Program Materials Science Program Name of Candidate Ashwini Kadam Title Study of Thermally Induced Higher Order Microcantilever Modes Microcantilevers have been widely studied for sensing tiny quantities of chemical and biological analytes in both vapor and liquid media. They have been shown to respon...

Finesse is a software simulation allowing one to compute the optical properties of laser interferometers used by interferometric gravitational-wave detectors today. This fast and versatile tool has already proven to be useful in the design and commissioning of gravitational-wave detectors. The basic algorithm of Finesse numerically computes the light amplitudes inside an interferometer using He...

We demonstrate the first all-fiber Raman probe utilizing higher order modes for the excitation. The spectrum of cyclohexane is measured using both the fundamental mode as well as in-fiber-generated Bessel-like modes. © 2013 Optical Society of America OCIS codes: 060.2370, 060.4370.

This paper describes a technique to significantly improve upon the mass peak shape and mass resolution of spaceborne quadrupole mass spectrometers (QMSs) through higher order auxiliary excitation of the quadrupole field. Using a novel multiresonant tank circuit, additional frequency components can be used to drive modulating voltages on the quadrupole rods in a practical manner, suitable for bo...

A single metallic nanodisk is the simplest plasmonic nanostructure, but it robust enough to generate a Fano resonance in forward and backward scattering spectra by increment of height symmetric asymmetric dielectric environment. Thanks phase retardation effect, non-uniform distribution electric field along aluminum (Al) generates out-of-plane higher-order modes, which interfere with dipolar mod...

Premature combustion that affects outputs, thermal efficiencies and lifetimes of internal combustion engine is called “knock effect”. However knock signal detection based on acoustic sensor is a challenging task due to existing of noise in the same frequency spectrum. Experimental results revealed that vibration signals, generated from knock, has certain frequencies related to vibration resonan...