Difference between revisions of "Fe55 peak shape"
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[[Image:events60_e_2050.png|thumb|300px|55Fe events, mixed 50/50 at 60 sccm, 2050V ]] | [[Image:events60_e_2050.png|thumb|300px|55Fe events, mixed 50/50 at 60 sccm, 2050V ]] | ||
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| + | 90/10 Ar/CO<sub>2</sub> (premixed) at approx 80 sccm<br> | ||
| + | The operating voltage for that mix was chosen to be 1450V. Afterpulses are present at 1550V (delayed, so are not included in the integration). | ||
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| + | [[Image:edge_9010_80_a.png|thumb|400px|max amplitude histo for 55Fe premixed 90/10 at ~80 sccm ]] | ||
| + | |width="400pt"| | ||
| + | [[Image:edge_9010_80_e.png|thumb|400px|energy histo for 55Fe mixed 90/10 at ~80 sccm]] | ||
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Revision as of 21:39, 11 November 2010
Fe55 with 50/50 Ar/CO2, New preamp and new HVB, ADC half-range
Mixed 50/50 at 40 sccm total, moved the source (collimated as usual) across the top of the straw towards the edge.... With the source over the edge of the straw, the count rate halves and the camel disappears.
Overlaying side and edge data, the light coloured plots are with the source above the wire.
Repeated at 60 sccm
Events histograms with the source above the wire.
Events histograms with the source off the wire (above the edge of the tube).
90/10 Ar/CO2 (premixed) at approx 80 sccm
The operating voltage for that mix was chosen to be 1450V. Afterpulses are present at 1550V (delayed, so are not included in the integration).
