The key feature of the Adventist Health Sonora Diana J. White Cancer Institute and Health Pavilion, a linear accelerator, is expected to be delivered on Wednesday.

The $2.1 million accelerator, used for radiation treatments on oncology patients, will be on the first floor behind a door that weighs 5,500 pounds and is opened and closed with a motor-driven door opener.

Lindsay Brewer, m arketing and public relations director for Adventist Health Sonora, said during a tour of the construction site on Greenley Road Monday the building is expected to be complete at the end of the year with move-in expected in 2018.

The three-story building includes diagnostic imaging, infusion center, laboratory, medical oncology, radiation oncology and rehabilitation. In addition, a number of outpatient services will be housed in the new Health Pavilion, including occupational physical and speech therapy, diagnostic imaging, lab services and primary care clinic.

The facility has two elevator cars for the public and another elevator for patients and staff. It features curtain glass across the front of the first and second floor to allow the most natural light into the building throughout the day.

The second floor features an overlook to the first-floor lobby and is home to the rehabilitation center and primary care. The third floor features open but private infusion bays that look out onto a rooftop garden terrace.

The heating, ventilation and air conditioning units on top of the building are hidden from site by the third-floor walls.

The 62,500-square-foot building is expected to cost about $36 million.