dc56 bi-weekly meeting: dc5 modifications
DESCRIPTION
DC56 Bi-weekly Meeting: DC5 Modifications. September 3, 2013 Robert Heitz University of Illinois. 64 More Channels per Layer. Color Coding G-10 -> Green PCBs -> Grey, Red, Gold. Grey PCBs are not modified Red PCBs are modified on the edges Gold PCBs are new. PCB Modified Edges. - PowerPoint PPT PresentationTRANSCRIPT
DC56 Bi-weekly Meeting:DC5 Modifications
September 3, 2013Robert Heitz
University of Illinois
64 More Channels per Layer
• Grey PCBs are not modified• Red PCBs are modified on the edges• Gold PCBs are new
Color CodingG-10 -> GreenPCBs -> Grey, Red, Gold
Before After
PCB Modified EdgesStraight Edge
Slanted Edge
Originally end PCBs had straight edges. Additional PCB require previous end boards to have a slant connection.
PCB Modified Edges
Slanted Edge
Side View of Modified DC5UU’ VV’Modified Side
Copper Shielding Modifications
• Additional PCBs extend out past G-10 and require shielding to be modified.
New PCBs and read out electronics require additional cuts on copper shielding.
Additional Soldering Cuts • Soldering cuts must extend around G-10
frames.
Original Soldering cuts
More soldering cuts must be made here to account for new PCBs
Soldering Cuts • Using the same soldering cuts as DC4 causes high
voltage cuts to be through holes.• This means high voltage cuts must be shallower. • Gas cuts must also be modified in this region.
Soldering Cut
Beam killer cuts must not be as deep.