All Figures

$\begin{figure} \par\includegraphics[width=8cm,clip]{boefig01.eps}\end{figure}$ Figure 1: Side view of the EPHIN-sensor, a telescope consisting of 6 Si-solid state detectors A, B, C, D, E, F (in green) surrounded by an active anticonincidence scintillator G (in red). 10 simulated tracks of 5 MeV electrons are shown in red as well as a pair of generated secondary gamma rays in blue.
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In the text

$\begin{figure} \par\includegraphics[width=15cm,clip]{boefig02.eps}\end{figure}$ Figure 2: Geometric factors ${\bf A}_{\rm Ee}$ , ${\bf A}_{\rm Ep}$ , ${\bf A}_{\rm Pe}$ , and ${\bf A}_{\rm Pp}$ as derived from the Monte-Carlo simulation of the EPHIN instrument response discussed in Sect. 3. Note the different scales for the values of the geometry factor (z-axis). We have applied logarithmic binning to the geometry factors to account for the power-law particle spectra that are expected in particle acceleration processes. ${\bf A}_{\rm Ee}$ and ${\bf A}_{\rm Pp}$ are near diagonal along $E_{\rm d} = E_{\rm b}$ , with some leakage towards lower energy deposits due to insensitive material and other losses. The cross-talk channels ${\bf A}_{\rm Ep}$ and ${\bf A}_{\rm Pe}$ are much smaller than ${\bf A}_{\rm Ee}$ and ${\bf A}_{\rm Pp}$ and considerably less diagonal.
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In the text

$\begin{figure} \par\includegraphics[width=15cm,clip]{boefig03.eps}\end{figure}$ Figure 3: Projections of the summed geometric factors shown in Fig. 2 onto the $E_{\rm b}$ ( top panels) and $E_{\rm d}$ ( lower panels) axes. Left-hand panels show the geometric factors ${\bf A}_{\rm Ee} + {\bf A}_{\rm Ep}$ for the electron (E) channels, and right-hand panels show the geometric factors ${\bf A}_{\rm Pp} + {\bf A}_{\rm Pe}$ for the proton (P) channels. Large differences are visible between the two projections of the electron channels, especially at low and high energies, while the proton channels appear to be shifted towards lower energies.
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In the text

$\begin{figure} \par\includegraphics[width=15cm,clip]{boefig04.eps}\end{figure}$ Figure 4: Time series of predominantly electron ( upper panel) and proton ( lower panel) count rates around the solar particle event of days 353 and 354 in 2002. The various curves (red, green, and blue) show count rates in different energy intervals. The three regions that we analyse in more detail are shaded in color: a 22-h pre-event period in turquoise, and two consequtive hours at the beginning of the event (grey and red).
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In the text

$\begin{figure} \par\includegraphics[width=15cm,clip]{boefig05.eps}\end{figure}$ Figure 5: EPHIN measurements (solid black curves) and inversion results (red stars) in the on-board processed electron and proton channels ( upper and lower panels, respectively) for the three time periods of the solar particle event on days 353 and 354 of 2002. The measurements (black curves) correspond to $z^{\rm E}$ and $z^{\rm P}$ in all equations, while the red stars are the results for $({\bf A}_{\rm Ee} + {\bf A}_{\rm Ep})f_1^{\rm (ep)}$ and $({\bf A}_{\rm Pe} + {\bf A}_{\rm Pp})f_2^{\rm (ep)}$ . Red stars along the x-axis show "underflow results'' ( $I~\leq 10^{-1}$ ).
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In the text

$\begin{figure} \par\includegraphics[width=15cm,clip]{NEW-boefig06.eps}\end{figure}$ Figure 6: Comparison of the intensities from E- and P-channels (Eq. (20) with m=30, n=30, $f_1^{\rm (ep)}$ ), (Eq. (21) with m=30, n=30, ${f_2^{\rm (ep)}}$ ), and a combined E and P analysis (Eq. (19) with m=60, n=30, ${f^{\rm (ep)}}$ ). Points at intensities of 10^-6 show underflows, ( $I~\leq 10^{-6}$ ).
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In the text

$\begin{figure} \par\includegraphics[width=15cm,clip]{boefig07.eps}\end{figure}$ Figure 7: Differential intensities for E and P channels ( upper and lower panels, respectively) for the three time periods shown in Fig. 4. Results for the inversion of Eq. (19) with m=60, n=30, ${f^{\rm (ep)}}$ are shown as green pluses in both panels, while the blue triangles show the "classical'' inversion of Eq. (13). Results for the inversions of Eq. (20) ( $f_1^{\rm (ep)}$ ) and (21) ( ${f_2^{\rm (ep)}}$ ) are also shown as red stars in the upper and lower panels, respectively. Points at intensities of 10^-6 show underflows, ( $I~\leq 10^{-6}$ ).
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In the text

$\begin{figure} \par\includegraphics[width=15cm,clip]{boefig08.eps}\end{figure}$ Figure 8: Proton and electron fluxes on day 2002/353 from the present analysis ( $\bigtriangleup$ protons , $\Box$ electrons) together with results from Gómez-Herrero (2005) ( $\bigcirc$ Go e^-, $\diamondsuit$ Go p).
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In the text

$\begin{figure} \par\includegraphics[width=8cm,clip]{boefig01.eps}\end{figure}$	Figure 1: Side view of the EPHIN-sensor, a telescope consisting of 6 Si-solid state detectors A, B, C, D, E, F (in green) surrounded by an active anticonincidence scintillator G (in red). 10 simulated tracks of 5 MeV electrons are shown in red as well as a pair of generated secondary gamma rays in blue.
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$\begin{figure} \par\includegraphics[width=15cm,clip]{NEW-boefig06.eps}\end{figure}$	Figure 6: Comparison of the intensities from E- and P-channels (Eq. (20) with m=30, n=30, $f_1^{\rm (ep)}$ ), (Eq. (21) with m=30, n=30, ${f_2^{\rm (ep)}}$ ), and a combined E and P analysis (Eq. (19) with m=60, n=30, ${f^{\rm (ep)}}$ ). Points at intensities of 10^-6 show underflows, ( $I~\leq 10^{-6}$ ).
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$\begin{figure} \par\includegraphics[width=15cm,clip]{boefig08.eps}\end{figure}$	Figure 8: Proton and electron fluxes on day 2002/353 from the present analysis ( $\bigtriangleup$ protons , $\Box$ electrons) together with results from Gómez-Herrero (2005) ( $\bigcirc$ Go e^-, $\diamondsuit$ Go p).
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