Difference between revisions of "Baffle Design"
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(New page: ==Eugene's Baffles== Zhiwen's Evaluation of Eugene's Baffles in GEMC ==Baffle Comparisons== Seamus' Baffle Comparisons Eugene's BaBar [https://userweb.jlab.org/~rior...) |
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| − | Eugene's BaBar [https://userweb.jlab.org/~riordan/20110330/index_eugene.html] | + | {| |
| − | Eugene's for Other Magnets [https://userweb.jlab.org/~riordan/20110406/index.html] | + | |- |
| − | Basic New | + | |Eugene's BaBar Design in GEMC |
| − | New design from ray tracing [https://userweb.jlab.org/~riordan/2011026/index.html] | + | | [https://userweb.jlab.org/~riordan/20110330/index_eugene.html] |
| + | |- | ||
| + | | Eugene's for Other Magnets | ||
| + | | [https://userweb.jlab.org/~riordan/20110406/index.html] | ||
| + | |- | ||
| + | | Basic New Designs | ||
| + | | [https://userweb.jlab.org/~riordan/20110413/index.html] | ||
| + | |- | ||
| + | |New design from ray tracing | ||
| + | | [https://userweb.jlab.org/~riordan/2011026/index.html] | ||
| + | |} | ||
==Baffles Design== | ==Baffles Design== | ||
| − | Designing baffles from ray traces | + | Designing baffles from ray traces requires GEMC runs without baffles, but detectors at the baffle z positions. |
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| − | [Image:Fitpaths.png] | + | [[Image:Fitpaths.png|500px|thumb|left|Fitting trajectory paths]] |
| − | |||
| − | [Image:CLEOpaths.png] | + | We define as fixed number of blocks which expand over a radius that will accept the full angular range from the whole target. Each block then has a range in phi, which we fit: |
| + | |||
| + | <br> | ||
| + | |||
| + | [[Image:Design desc.png|500px|thumb|left|Designing baffle openings]] | ||
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| + | These are then considered, for each block over all baffles, to carve out an opening which does not allow particles below a momentum from making it through. There is a maximum opening which is defined from the number of sectors, along with a minimum "dead zone" which prevents photons. | ||
| + | |||
| + | [[Image:CLEOpaths.png|500px|thumb|left|CLEO Baffle openings (before introduction of wedge)]] | ||
Revision as of 12:04, 26 October 2011
Eugene's Baffles
Zhiwen's Evaluation of Eugene's Baffles in GEMC
Baffle Comparisons
Seamus' Baffle Comparisons
| Eugene's BaBar Design in GEMC | [1] |
| Eugene's for Other Magnets | [2] |
| Basic New Designs | [3] |
| New design from ray tracing | [4] |
Baffles Design
Designing baffles from ray traces requires GEMC runs without baffles, but detectors at the baffle z positions.
We define as fixed number of blocks which expand over a radius that will accept the full angular range from the whole target. Each block then has a range in phi, which we fit:
These are then considered, for each block over all baffles, to carve out an opening which does not allow particles below a momentum from making it through. There is a maximum opening which is defined from the number of sectors, along with a minimum "dead zone" which prevents photons.
