A tenured position with less pay and less responsibilities than a professorship
I’m sorry to disappoint you, but at US R1 universities, a position like the one you imagine doesn’t exist. To have a job with tenure at any salary, you have to teach and do some administrative duties.

If you win a Nobel prize or move to France on the other hand, the possibility of you getting a tenured research-only position may become more realistic. See this question for more details.