Tsukuba Express -> Bus that stops at Tsukuba StationTake either the bus bound for "Tsukuba Daigaku Chuo" or "Tsukuba Daigaku Junkan Bus" ("Migi-mawari") (University Loop-line On-campus Bus) and get off at "Dai-ichi (No. 1) Area Mae."
1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573
7th and 8th floors of Laboratory of Advanced Research B, University of Tsukuba
See also the following page:
"Access to Tsukuba Campus" page of the "University of Tsukuba" website.