Start Counter design conversation with Youri

Met with Youri Sharabian and Chuck Hutton on March 26, 2012.

  • when machining from a block of scintillator there may be internal stresses, may have to do it as a two-step process
  • polishing is challenging, there was no hand polishing form Hall B SC
  • molded surface best, better than hand polished
  • cutting too fast can lead to crazing, or too much at a time
  • wrapping difficult, thermal shaped Tedlar material
  • Rohacell does not come in large blocks
  • inner form support, used Lastifoam [sp?], machined out of a single piece, about1/4″ thick
  • outside: indiviual pieces, softer foam than inner foam
  • used woven cotton tape to secure everything on the outside