Thanks :) I stuffed it all into the 5 x 2-1/4 square Minibox, including a 6 ns semirigid charge line.
Displayed 10-90 risetime is just under 400 ps on a 75 ps sampling head.
Flat-top could be flatter but that really hurts the risetime...
I'd need to go to microstrip and leadless (surface-mount) parts to get any more performance. That's another project for another day!
Pics added to avalanche pulser album.
