Difference between revisions of "Charge Collector Design"
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| − | The charge collector for the Qweak chambers will use concentric strips aligned with the electron scattering polar angle (<math>\theta</math>: the Z-axis is pointing along the beam direction), shown as the top layer below in read, and radial strips (shown as the bottom layer in blue). The radial strip are not aligned with phi due to the expected phi symmetry. Six, 130 pin output connectors will be used. Two of the pins are ground and 128 carry signals from individual strips. | + | The charge collector for the Qweak chambers will use concentric strips aligned with the electron scattering polar angle (<math>\theta</math>: the Z-axis is pointing along the beam direction), shown as the top layer below in read, and radial strips (shown as the bottom layer in blue). The radial strip are not aligned with phi due to the expected phi symmetry. Six, 130 pin output connectors will be used. Two of the pins are ground and 128 carry signals from individual strips. |
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= Latest Design 12/07= | = Latest Design 12/07= | ||
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[[Image:pad_connector_zoom.jpg | 500px]] | [[Image:pad_connector_zoom.jpg | 500px]] | ||
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| + | = Preliminary design 6/07 = | ||
| + | The PCboard design software had trouble displaying the entire readout board at once such that you could see enough detail. The two pictures below represent the Top and Bottom halfs of the readout board. A view of the entire board can be seen using a Gerber file viewer. The picture of the top and Bottom layers can be found here | ||
| + | [[ReadoutBoardGerberFiles]] along with links to the gerber files themselves. | ||
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| + | == The Top Half of the Charge Collector showing all six output conenctors== | ||
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| + | [[Image:TopHalfofChargeColecotr.jpg | 500 px]]<br> | ||
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| + | ==This is the bottom half of the charge collector showing only the bottom 2 output connectors== | ||
| + | [[Image:BottomHalfofChargeColecotr.jpg | 500 px]]<br> | ||
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| + | ==A close up view of the 130 pin pads which will be used to mount connectors for the [http://www.iac.isu.edu/mediawiki/index.php/VFAT_readout_electronics VFAT cards].== | ||
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| + | We need to have plated holes which allow the copper lines to pass through to the very last layer where the copper pads for the 130 pin connector are. | ||
| + | [[Image:OutputConnectorPads.jpg | 500 px]]<br> | ||
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| + | The main web page for the connectors is at | ||
| + | [http://www.erni.com/smcfront.htd?&pb-id=wdf2a56609138ecf524dd04bd6e12bcefda8624884a] <br> | ||
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| + | [[Taget3001_GerberFileProblem]] | ||
| + | [http://www.ibfriedrich.com/english/index.htm Target 3001 design software] | ||
Revision as of 16:07, 7 December 2007
The charge collector for the Qweak chambers will use concentric strips aligned with the electron scattering polar angle (: the Z-axis is pointing along the beam direction), shown as the top layer below in read, and radial strips (shown as the bottom layer in blue). The radial strip are not aligned with phi due to the expected phi symmetry. Six, 130 pin output connectors will be used. Two of the pins are ground and 128 carry signals from individual strips.
Latest Design 12/07
Bottom Copper Layer
Internal radius: 69.7mm
External radius: 313.9mm
Circular lines width: 0.4mm
Top Copper Layer
line width: 0.1mm
Connector pads view
Preliminary design 6/07
The PCboard design software had trouble displaying the entire readout board at once such that you could see enough detail. The two pictures below represent the Top and Bottom halfs of the readout board. A view of the entire board can be seen using a Gerber file viewer. The picture of the top and Bottom layers can be found here ReadoutBoardGerberFiles along with links to the gerber files themselves.
The Top Half of the Charge Collector showing all six output conenctors
This is the bottom half of the charge collector showing only the bottom 2 output connectors
A close up view of the 130 pin pads which will be used to mount connectors for the VFAT cards.
We need to have plated holes which allow the copper lines to pass through to the very last layer where the copper pads for the 130 pin connector are.
The main web page for the connectors is at
[1]