#LyX 1.6.5 created this file. For more info see http://www.lyx.org/ \lyxformat 345 \begin_document \begin_header \textclass paper \begin_preamble \newcommand{\vects}[1]{\boldsymbol{#1}} \newcommand{\matrs}[1]{\boldsymbol{#1}} \newcommand{\matr}[1]{\boldsymbol{\mathsf{#1}}} \end_preamble \use_default_options true \language english \inputencoding auto \font_roman default \font_sans default \font_typewriter default \font_default_family default \font_sc false \font_osf false \font_sf_scale 100 \font_tt_scale 100 \graphics default \paperfontsize default \spacing single \use_hyperref false \papersize a4paper \use_geometry true \use_amsmath 1 \use_esint 1 \cite_engine basic \use_bibtopic false \paperorientation portrait \leftmargin 3cm \topmargin 4cm \rightmargin 3cm \bottommargin 4cm \secnumdepth 3 \tocdepth 3 \paragraph_separation indent \defskip medskip \quotes_language english \papercolumns 1 \papersides 1 \paperpagestyle default \tracking_changes false \output_changes false \author "" \author "" \end_header \begin_body \begin_layout Title Calibrazione misure magnetiche \end_layout \begin_layout Section Campo sull' asse di un solenoide finito \end_layout \begin_layout Standard \begin_inset Float figure wide false sideways false status open \begin_layout Plain Layout \end_layout \begin_layout Plain Layout \align center \begin_inset Graphics filename solenoide.eps width 8cm \end_inset \end_layout \begin_layout Plain Layout \align center \begin_inset Caption \begin_layout Plain Layout Solenoide di eccitazione \end_layout \end_inset \end_layout \begin_layout Plain Layout \end_layout \end_inset \end_layout \begin_layout Standard \begin_inset Float table wide false sideways false status open \begin_layout Plain Layout \align center \begin_inset Tabular \begin_inset Text \begin_layout Plain Layout Diametro esterno \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout 73 \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout mm \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout Diametro interno \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout 69.7 \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout mm \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout Lunghezza \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout 145 \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout mm \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout Numero di spire \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout 90 \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout \end_layout \end_inset \end_inset \end_layout \begin_layout Plain Layout \align center \begin_inset Caption \begin_layout Plain Layout Caratteristiche del solenoide di eccitazione \end_layout \end_inset \end_layout \end_inset \end_layout \begin_layout Standard \begin_inset Float table wide false sideways false status open \begin_layout Plain Layout \end_layout \begin_layout Plain Layout \align center \begin_inset Tabular \begin_inset Text \begin_layout Plain Layout Diametro esterno \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout 15.4 \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout mm \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout Diametro interno \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout 14.4 \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout mm \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout lunghezza \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout 5 \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout mm \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout Numero di spire \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout 10 \end_layout \end_inset \begin_inset Text \begin_layout Plain Layout \end_layout \end_inset \end_inset \end_layout \begin_layout Plain Layout \align center \begin_inset Caption \begin_layout Plain Layout Caratteristiche del solenoide di riferimento \end_layout \end_inset \end_layout \begin_layout Plain Layout \end_layout \end_inset \end_layout \begin_layout Standard Il campo magnetico nel punto 0 è dato da \begin_inset Formula \[ B_{z}=\frac{\mu_{0}NI}{2}(\cos\vartheta_{1}+\cos\vartheta_{2})\] \end_inset dove \begin_inset Formula \begin{eqnarray*} \cos\vartheta_{1} & = & \frac{L_{1}}{\sqrt{L_{1}^{2}+r^{2}}}\\ \cos\vartheta_{2} & = & \frac{L_{2}}{\sqrt{L_{2}^{2}+r^{2}}}\end{eqnarray*} \end_inset Per un punto centrale \begin_inset Formula $L_{1}=L_{2}=72.5\: mm$ \end_inset \begin_inset Formula $\cos\vartheta_{1}=\cos\vartheta_{2}=0.897$ \end_inset \end_layout \begin_layout Standard \begin_inset Float figure wide false sideways false status open \begin_layout Plain Layout \end_layout \begin_layout Plain Layout \noindent \align center \begin_inset Graphics filename bz.eps lyxscale 60 width 10cm \end_inset \end_layout \begin_layout Plain Layout \noindent \align center \begin_inset Caption \begin_layout Plain Layout Andamento di \begin_inset Formula $B_{z}/\mu_{0}I$ \end_inset in funzione di \begin_inset Formula $z$ \end_inset per il solenoide di eccitazione \end_layout \end_inset \end_layout \begin_layout Plain Layout \end_layout \end_inset \end_layout \end_body \end_document