Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 12 of 12 for “"beam polarization"”.
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Compton polarimeter for Qweak Experiment at Jefferson Laboratory
… goals in the Qweak experiment, the electron beam polarization must be known to an absolute uncertainty of 1%. A new Compton polarimeter has been built and installed in Hall C in order to make this important measurement. Compton polarimetry has been chosen for its ability to deliver continuous …
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Measurement of a weak polarization sensitivity to the beam orbit of the CEBAF accelerator
… to investigate a predicted sensitivity of the beam polarization to the vertical betatron orbit in the recirculation arcs. This is the first measurement of any such effect at CEBAF, and provides information about the polarized beam delivery performance of the accelerator. A brief description of …
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Topics on electron,neutrino and axion scattering
… side, development of a multi-purpose beam instrument based on synchrotron light to measure the electron beam polarization, beam profile and intensity at the future Electron Ion Collider is presented.
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A test of parity conservation in proton-proton scattering at 15 MeV
… cross section and the he1icity of the incident beam. The experiment used integral counting techniques to achieve the high data rate required. The Van de Graaff Lamh-shift polarized ion source was modified to permit reversing the direction of polarization at a 1 kHz rate. The experiment used …
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Measurement Of Neutron Radius In Lead By Parity Violating Scattering Flash ADC DAQ
… = 5.8° from the Lead target. Beam corrected pairty violaing counting rate asymmetry is (A<em><sub>corr</sub></em> = 594 ± 50(<em>stat</em>) ± 9(<em>syst</em>))<em>ppb</em> at <em>Q</em><sup>2</sup> = 0.009068GeV<sup>2.</sup></p> <p>This dissertation also presents the details of …
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A polarized helium ion beam for surface electronic structure studies
… the development of a spinpolarized He+ ion beam suitable for use as a- probe of surface electronic structure of metals. The method would represent an extension of ion neutralization spectroscopy (INS), and should provide new information on surface magnetism, electron correlation effects, and …
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Utilizing Parity Violating Electron Scattering As a Probe to Measure the Neutron Radius of 208-pb
… which is a precision measurement of the electron beam polarization (which is the largest contributor to experimental error making control a high priority). The results of the Møller polarimetry measurements taken over the PREX-II experiment averaged 89.7% ± 0.1% (stat) ± 0.89% (syst) while results …
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Bhabha scattering in e⁺e⁻ collisions at TRISTAN
… energy of ~160 GeV/c². The effect of transverse beam polarization on Bhabha scattering is also studied. The ϕ dependence of Bhabha events are fitted to the QED prediction and found to agree with the theory. However, no quantitative conclusion on polarization effect can be drawn based on current …
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Precision measurement of the spin-dependent asymmetry in the threshold region of quasielastic ³He [right arrow] (e [right arrow], e)Ì
… polarized continuous wave electron beam incident on a high-pressure polarized 3He gas target. The polarized electron beam was generated by illuminating a strained GaAs cathode with high intensity circularly polarized laser light, and an average beam polarization of about 70% was …
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Miter bend loss and higher order mode content measurements in overmoded millimeter-wave transmission lines
… of power loss on these lines have not considered beam polarization or higher order mode effects. This thesis will develop a theory of transmission that includes the effect of linearly polarized higher order modes on power loss in overmoded corrugated transmission line systems. This thesis derives …
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Femtosecond laser writing in transparent materials
… focused, linearly polarized, femtosecond laser beam. Two different types of periodic structures, the main one with period (Lambda.E) in the direction of the laser beam polarization and the second with period (Lambda.k) in the direction of the light propagation, are identified from the …
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Spin Dependence in Polarized Proton-Proton Elastic Scattering at RHIC
… that allow detectors to be moved close to the beam for the measurement of high energy protons scattered at very small angles. This setup, together with the unique capability of RHIC to collide spin-polarized proton beams, allows STAR to study both the dynamics and the spin-dependence of the …