Difference between revisions of "Fe55 peak shape"

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Revision as of 11:26, 9 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.

max amplitude histo for 55Fe mixed 50/50 at 40 sccm
energy histo for 55Fe mixed 50/50 at 40 sccm



max amplitude histo for 55Fe (side of straw) mixed 50/50 at 40 sccm
energy histo for 55Fe (side of straw) mixed 50/50 at 40 sccm


Overlaying side and edge data, the light coloured plots are with the source above the wire.

max amplitude histo for 55Fe mixed 50/50 at 80 sccm
energy histo for 55Fe mixed 50/50 at 80 sccm


Events histograms with the source above the wire.

55Fe events, mixed 50/50 at 60 sccm, 1850V
55Fe events, mixed 50/50 at 60 sccm, 1950V
55Fe events, mixed 50/50 at 60 sccm, 2050V

Events histograms with the source off the wire (above the edge of the tube).

55Fe events, mixed 50/50 at 60 sccm, 1850V
55Fe events, mixed 50/50 at 60 sccm, 1950V
55Fe events, mixed 50/50 at 60 sccm, 2050V
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