Which Stephen King novel is set in Chester's Mill under an invisible barrier?

The Stephen King novel set in Chester’s Mill beneath an invisible barrier is Under the Dome.

The story begins at 11:44 a.m. on October 21, when an enormous, invisible, dome-shaped barrier suddenly cuts the fictional Maine town off from the outside world. The barrier is semipermeable and effectively indestructible, trapping residents, visitors, vehicles, and aircraft within or outside its boundary.

The novel follows the town’s struggle over survival and political power during the crisis. Dale “Barbie” Barbara becomes a central figure, while James “Big Jim” Rennie exploits the emergency to consolidate authority. The story covers only eight days, from October 21 through October 28.

Readers sometimes confuse the novel with the television series, which premiered on CBS in 2013. The series uses the same basic premise and many characters but changes substantial plot details and ultimately diverges from King’s 2009 novel.