Lawrence Livermore National Lab (LLNL) offers summer student programs including the Defense Science and Technology Internship (DTSI) with many options that may be of high appeal to physics students. The program includes close mentorship with a staff scientist.
Here’s a link to a flyer for the 2023 program: https://drive.google.com (IU)
We’re posting information about this program, specifically, to our blog because one of our alums, Dr. Andrew Ratkiewicz (IUSB B.S. 2006; link is to a 2021 bio on our blog), is now a staff scientist at LLNL (and experienced mentor for the program), and he has offered to answer questions from our students. Let me know if you’re interested, and I’d be happy to put you in touch with him!