Optimization of a magnet circuit design for a cylindrical mass spectrometer
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Optimization of a magnet circuit design for a cylindrical mass spectrometer

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Published by Raytheon Co., Microwave and Power Tube Division, National Aeronautics and Space Administration, National Technical Information Service, distributor in Waltham, Mass, [Washington, DC, Springfield, Va .
Written in English

Book details:

Edition Notes

SeriesNASA contractor report -- NASA CR-176400
ContributionsUnited States. National Aeronautics and Space Administration
The Physical Object
Pagination1 v
ID Numbers
Open LibraryOL16873620M

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Optimization of a magnet circuit design for a cylindrical mass spectrometer Abstract The results of an optimization effort to achieve a minimum weight configuration for a magnetic section circuit (MSC) used in the magnetic portion of a double-focusing mass spectrometer is presented.   The design of a magnetic circuit is based on the analysis of the magnetic flux density B and the magnetic field strength H in different parts of the machine. The air gap of an electrical machine has a significant influence on the mmf of the magnetic circuit. characteristics were computed via the electrical circuit but not the magnetic circuits. Carpenter [19] linked the device model of a transformer, which could be the first time the equivalent magnetic circuit was applied for analysis without an electrical circuit. Campbell [10] applied EMCM to design . Synopsis We present a design and optimization of an irregular Aubert ring-pair-aggregate permanent magnet array that generates 2D B-field with an improved gradient for head imaging for a low-field.

/Magnetic Resonance Materials in Physics, Biology and Medicine 13 () – Fig. 5. Control window for the spectrometer software. Additional pop-up windows allow the user control over RF pulse optimization, gradient calibration, spectrometer frequency, and pulse sequence loading. from 2– MHz with a noise figure of less than dB. (I) Hornung, Christine JLU Giessen High-precision mass measurements with MR-TOF-MS (I) Berg, Georg Peter U Notre Dame The ion-optical design of the high rigidity spectrometer HRS for FRIB (I) Kazantseva, Erika TU Darmstadt High-order aberrations of large aperture magnets and applications to the Super-FRS. similar manner, a bar magnet is a source of a magnetic field B G. This can be readily demonstrated by moving a compass near the magnet. The compass needle will line up along the direction of the magnetic field produced by the magnet, as depicted in Figure Figure Magnetic field produced by a bar magnet.   A cylindrical lens, thinner towards the edges of the detector, should work. In setting up this optimization, a glitch forced a minor alteration: the minimum wavelength for which Zemax allows silica to be employed in an optical system is nm. Thus, we substitute nm for nm in the following variant of the instrument design.

7 C-C Tsai 13 Series Elements and Parallel Elements Magnetic circuits may have sections of different materials Cast iron, sheet steel, and an air gap For this circuit, flux is the same in all sections Circuit is a series magnetic circuit Series magnetic circuit Parallel magnetic circuit C-C Tsai Magnetic Circuits with DC Excitation. Design, Optimization and Initial Performance of a Toroidal rf Ion Trap Mass Spectrometer November International Journal of Mass Spectrometry () 1) As the magnet enters it generates a current in the loop that sets up a magnetic field to oppose the entry of the magnet. 2) When the magnet is in the middle of the coil the it is at the point where the magnetic poles will switch. At this point there is no current flowing in the coil since the p.d is zero.   We present a new two-plate linear ion trap mass spectrometer that overcomes both performance-based and miniaturization-related issues with prior designs. Borosilicate glass substrates are patterned with aluminum electrodes on one side and wire-bonded to printed circuit boards. Ions are trapped in the space between two such plates. Tapered ejection slits in each glass plate eliminate .