You can download and install JAS3 from:
ftp://ftp.slac.stanford.edu/software/jas/JAS3/v0.8.0rc3/
After installing JAS3 run the application and from the menu choose:
View, Plugin Manager
Now choose the Available Tab, and select all of the following:
- HepRep Plugin
- WIRED 4
- WIRED 4 Base Library
- org.lcsim