\relax \citation{gluex} \citation{jef} \citation{crystals} \@writefile{toc}{\contentsline {section}{\numberline {I}Introduction}{1}} \@writefile{lof}{\contentsline {figure}{\numberline {1}{\ignorespaces Active base for Hamamatsu R4125 photomultiplier tube.}}{1}} \newlabel{active_base}{{1}{1}} \@writefile{lof}{\contentsline {figure}{\numberline {2}{\ignorespaces Signal amplitude induced by a laser pulser as function of the rate. Measurements were performed for two amplitude values.}}{1}} \newlabel{laser}{{2}{1}} \@writefile{lof}{\contentsline {figure}{\numberline {3}{\ignorespaces Signal pulse amplitude obtained from the calorimeter module as a function of the photon beam energy (denoted as tagger energy). The amplitude is given in units of flash ADC counts.}}{1}} \newlabel{prototype}{{3}{1}} \citation{module} \bibcite{gluex}{1} \bibcite{jef}{2} \bibcite{crystals}{3} \bibcite{module}{4} \@writefile{lof}{\contentsline {figure}{\numberline {4}{\ignorespaces Test setup used for the irradiation of active bases using Cs-137 source (left). Signal pulse induced by an LED before irradiation (middle) and after the failure of the power regulator at a dose of 20 kRad (right).}}{2}} \newlabel{irradiator}{{4}{2}} \@writefile{toc}{\contentsline {section}{\numberline {II}Test results}{2}} \@writefile{toc}{\contentsline {section}{\numberline {III}Summary}{2}} \@writefile{lof}{\contentsline {figure}{\numberline {5}{\ignorespaces Degradation of an active base amplitude induced by an LED as a fanction of the accumulated dose.}}{2}} \newlabel{amp_degradation}{{5}{2}} \@writefile{toc}{\contentsline {section}{References}{2}}