Difference between revisions of "First fiber tests"
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# The fiber lot number is 090128-2. | # The fiber lot number is 090128-2. | ||
# The first fiber scans have been performed with scans from 50 cm to 320cm using a 25muCi Sr90 source.<br> | # The first fiber scans have been performed with scans from 50 cm to 320cm using a 25muCi Sr90 source.<br> | ||
| − | The first | + | The first fibers scanned were fiber 8, 4 and 1<br> |
| − | [[Image:fit_res_fiber8.jpg|160px]] | + | [[Image:fit_res_fiber8.jpg|160px]] [[Image:fit_res_fiber4.jpg|160px]] [[Image:fit_res_fiber1.jpg|160px]] <br> |
| + | the plots show the fit parameter as a function the source position from the end of | ||
| + | the fiber where it is read out by an XP1911 1" photo multiplier. Top left is the pedestal and its width, top right is the single photo-electron peak and width and bottom left are the background parameters. The bottom right plot shows the extracted mean number of photo electrons with an exponential fit. | ||
Revision as of 19:37, 18 February 2009
First fiber tests
- The first batch of 50 fibers have arrived at Jlab, Mon. Feb. 15 2009
- The fiber lot number is 090128-2.
- The first fiber scans have been performed with scans from 50 cm to 320cm using a 25muCi Sr90 source.
The first fibers scanned were fiber 8, 4 and 1
the plots show the fit parameter as a function the source position from the end of
the fiber where it is read out by an XP1911 1" photo multiplier. Top left is the pedestal and its width, top right is the single photo-electron peak and width and bottom left are the background parameters. The bottom right plot shows the extracted mean number of photo electrons with an exponential fit.
