Difference between revisions of "Start Counter Operations 2023"
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* there are two distinctive "lines" that with the second one at a somewhat lower gain. This can be readily identified with AMO radiator runs. Why this whould cause a different gain in the Start counter is unclear. It is true that the photon flux is somewhat lower than for the Diamond radiator runs since the electron beam current was the same. | * there are two distinctive "lines" that with the second one at a somewhat lower gain. This can be readily identified with AMO radiator runs. Why this whould cause a different gain in the Start counter is unclear. It is true that the photon flux is somewhat lower than for the Diamond radiator runs since the electron beam current was the same. | ||
* the changes in gain seem to not just change gradually but the seem to have some "step" function aspect to it. And rather than looking at a gradual change over time one can identify sections of times where the gain was rather constant. | * the changes in gain seem to not just change gradually but the seem to have some "step" function aspect to it. And rather than looking at a gradual change over time one can identify sections of times where the gain was rather constant. | ||
| − | * the overall gain reduction from the start of the run period to the end is of order 1.7%, so it is not as dramatic as the plot may suggest. | + | * the overall gain reduction from the start of the run period to the end is of order 1.7%, so it is not as dramatic as the plot may suggest (y-scale). |
[[File:sc_dedx_winter20203.png | 300px]] | [[File:sc_dedx_winter20203.png | 300px]] | ||
Revision as of 07:51, 22 September 2024
Start Counter Operations Winter 2023
looking at the dEdx data of the start counter one can come to several conclusions:
- there is a noticible slope indicating a diminishing gain over time
- there are two distinctive "lines" that with the second one at a somewhat lower gain. This can be readily identified with AMO radiator runs. Why this whould cause a different gain in the Start counter is unclear. It is true that the photon flux is somewhat lower than for the Diamond radiator runs since the electron beam current was the same.
- the changes in gain seem to not just change gradually but the seem to have some "step" function aspect to it. And rather than looking at a gradual change over time one can identify sections of times where the gain was rather constant.
- the overall gain reduction from the start of the run period to the end is of order 1.7%, so it is not as dramatic as the plot may suggest (y-scale).
