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Reflections: On being a man in Social Work
Get PDFReflective article on the gender implications for men as social worker
Soulful Storytelling With Men: An Invitation to Intimacy
Get PDFThe dominant construction of masculinty suggests men are unable or unwilling to speak from their hearts with emotion. This paper suggests storytelling techniques for working to engage men in intimate conversations on their lives
Bench Test Results on a new Technique for Far InfraRed Polarimetry
Get PDFThe results of bench tests performed on a new method of combined interferometry/polarimetry for the magnetic-field reconstruction of tokamak plasmas is presented. In particular, the sensitivity obtained in the polarimetric measurement shows the feasibility of Faraday rotation determination approaching a precision of ±0.2°. The method is based on an optically pumped far-infrared laser with a rotating polarization where both the interferometric and polarimetric information is determined from phase measurements. Specific sources that introduce disturbances in the optical arrangement and that can limit the attainment of the polarimetric precision, mentioned above, are discussed
Status of the RFX experiment
Get PDFThe first results obtained in the RFX reversed field pinch experiment after the 1995 machine modifications are reported. The confinement, for fully stationary discharges at 0.6 MA, has now reached the expected values, even in the presence of MHD wall locked modes. Studies on locked mode effects have evidenced currents flowing from the plasma into the vessel in the region of locking. Measurements on plasma rotation and radial electric field have shown a perpendicular velocity shear at the edge similar to what is found in tokamaks and stellarators. New measurements on edge superthermal electrons and some evidence of their correlation with plasma core characteristics are included
Single Cord far-infrared polarimetry experiment on RFX
Get PDFThis paper summarises the work of the authors in the realisation and testing of a pilot single chord polarimetry experiment on the RFX (reversed field experiment) machine, at the far-infrared wavelength of 118.8 µm. The fundamental purpose of this experiment is to demonstrate the feasibility of a Faraday rotation angle measurement on RFX, with the required resolution, and to clarify all the aspects which may be useful for the final six-chord version of the diagnostic. The apparatus which has been developed is described, with emphasis on some of the modifications which proved essential in order to obtain a satisfactory measurement, in spite of the hostile environment of the machine. Typical results of Faraday angle measurements are presented and discussed, and the reliability of the measurement is demonstrated. In particular, the required +0.2o accuracy is achieved and the results are consistent with magnetic field profiles similar to the ones predicted by the Bessel function model. Suitable design considerations are formulated in order to guarantee the required performance in the six-chord version, even when the machine moves into full regime
Single Chord Polarimetry results on RFX
Get PDFA single-chord FIR polarimeter (λ=118.8μm) has been mounted on RFXand is now under test. The purpose of the diagnostic is to ascertain the feasibility of measuring a Faraday rotation effect n the RFX plasma and to discover what requirements are necessary for a future six-chord diagnostic. The diagnostic should measure small Faraday rotation angles (of the order of a few degrees) and the required resolution is of ±0.2 . The tests carried out reveal various sources of disturbance: electrical disturbances in the signals vibration effects on the optical components, detector noise and perturbations on the laser syste