Difference between revisions of "TGEM Mask Design"

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Insert design PDF file and pictures describing the design with text.
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The figure below shows the basic size of a mask for the TGEM preamps.  The 2.5 mm diameter holes are for alignment.
  
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Coating U-238 or Th-232 is essential for neutron detection in the range 2-14 MeV, but THGEM contains holes that should be protected from any coating material. So, a mask is designed to cover these holes.
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[[Image: copper_foilmask_all.jpeg | 500 px]]
  
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The mask is made of stainless steel, 10 um laser tolerance with cut the plate to get the shape in the figure:
 
  
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[[Image: holes_covered_by_mask.jpeg | 300 px]]
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The 0.4 mm wide lines in the mask will cover the TGEM holes to prevent filling in the holes with either paste or sputtering material.  The distance between lines 0.46 mm. 
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The lines in the mask has the following dimensions:
 
  
 
[[Image: copper_foimask_lines_dismensions.jpeg | 300 px]]
 
[[Image: copper_foimask_lines_dismensions.jpeg | 300 px]]
  
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An adjustment holes will be cut in circle of 2.5 mm in diameter as shown:
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The 2.5 mm diamter alignment holes are 106 mm apart.
  
 
[[Image: adjustment_holes.jpeg | 300 px]]
 
[[Image: adjustment_holes.jpeg | 300 px]]
  
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To have the final shape for the mask.
 
  
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[[Image: copper_foilmask_all.jpeg | 300 px]]
 
  
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Please look at the following file for more details for the manufacturer.
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Please look at the following file for more details about the mask project.
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Fill strips with color (silver/gray).  Make text bold block.
  
 
[[File:mask_design_04mm_98C_120L_2.5mm_diameter_adj_holes.pdf]]
 
[[File:mask_design_04mm_98C_120L_2.5mm_diameter_adj_holes.pdf]]
  
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Done by Aug.12,2009
 
  
  
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[http://wiki.iac.isu.edu/index.php/Neutron_TGEM_Detector_Abdel] [[Neutron_TGEM_Detector_Abdel]]
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[[Neutron_TGEM_Detector_Abdel]]

Latest revision as of 05:31, 26 October 2009

The figure below shows the basic size of a mask for the TGEM preamps. The 2.5 mm diameter holes are for alignment.

Copper foilmask all.jpeg


The 0.4 mm wide lines in the mask will cover the TGEM holes to prevent filling in the holes with either paste or sputtering material. The distance between lines 0.46 mm.

Copper foimask lines dismensions.jpeg

The 2.5 mm diamter alignment holes are 106 mm apart.

Adjustment holes.jpeg


Please look at the following file for more details about the mask project. 

Fill strips with color (silver/gray).  Make text bold block.

File:Mask design 04mm 98C 120L 2.5mm diameter adj holes.pdf



Neutron_TGEM_Detector_Abdel

Retrieved from "https://wiki.iac.isu.edu/index.php?title=TGEM_Mask_Design&oldid=46011"