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.