The main CENPA building dates back to the 1950s (ground was broken in 1948) . This is the building on the left side of the courtyard as you stand with your back to the parking lot; it now includes the two-story office wing and some lab space. It is sometimes called the "Cyclotron Building" because it once housed a cyclotron in what is now the Circle Room for gravity experiments.
Later, the building was extended to the rough horseshoe shape it has today. The newer part of the building, on the right side of the courtyard as you stand with your back to the parking lot, contains the conference room, the front office, and the Tandem Van de Graaff accelerator. It's therefore sometimes called the "Van de Graaff Building" or the "Accelerator Building".
The dividing line between the two CENPA buildings runs roughly through the High Bay as shown by the dashed gray line in the first attached map.
Further south in the parking lot is the CENPA Instrument Shop. Across campus, at the corner of NE 45th and Pacific NE, is the main Physics Astronomy Building (PAB) (see second attached map). Some CENPA work is done in PAB: there are several CENPA-affiliated labs in the basement, as well as faculty offices upstairs. Department colloquia and seminars are usually held in PAB and it is not uncommon for CENPA people to shuffle back and forth for PAB events.
The CENPA atlas shows floor plans of all three CENPA buildings, and gives a key to commonly used names for the various rooms.
