From benesch at jlab.org Thu Feb 6 13:40:43 2025 From: benesch at jlab.org (Jay Benesch) Date: Thu, 6 Feb 2025 13:40:43 -0500 Subject: [Moller] collimators Message-ID: Mostly concerned with proton beams but some of the comments about tungsten may be of interest. I hadn't thought about hydrogen embrittlement of tungsten via water cooling before seeing it herein. There was no issue that I'm aware of with the Qweak collimator but I pass this along nonetheless. http://arxiv.org/abs/2502.03305 F. Pellemoine, K. Ammigan, C. Barbier, S. Bidhar, A. Casella, M. Calviani, C. Densham, P. Hurh, D. Kim, D. Liu, K. Lynch, S. Makimura, D. Senor, V. Shiltsev, D. Stratakis, J. Terry, K. Yonehara Designing a reliable target is already a challenge for MW-class facilities today and has led several major accelerator facilities to operate at lower than design power due to target concerns. With present plans to increase beam power for next generation accelerator facilities in the next decade, timely R and D in support of robust high power targets is critical to secure the full physics benefits of ambitious accelerator power upgrades. A comprehensive R and D program must be implemented to address the many complex challenges faced by multi MW beam intercepting devices. This roadmap is envisioned to be helpful to the DOE-OHEP office when planning and prioritizing future R and D activities as well as leveraging synergies across the Office of Science. The roadmap will be extremely beneficial to the broader (external to DOE HEP) HPT community by communicating OHEP s high level strategy and objectives for HPT R and D and highlighting possible opportunities for collaboration. From mgericke at physics.umanitoba.ca Mon Feb 24 21:26:03 2025 From: mgericke at physics.umanitoba.ca (Michael Gericke) Date: Mon, 24 Feb 2025 20:26:03 -0600 Subject: [Moller] [EXTERNAL] main detector module assembly Message-ID: Hello, If you are interested in a quick look at how the main detector modules are assembled, here is a preliminary time laps video of the main detector module assembly and testing at Manitoba. This was put together by Mohammad Laheji and our group of students.? They say they will improve the video in the coming weeks. I want to send a big thank you to the students and postdocs who are working to put this all together (the entire MOLLER project), no matter where you are from. None of this could happen without your work! Some people understand this - many apparently don't - or they take it for granted. Timelapse-incomplete.mp4 Thanks, Michael -------------- next part -------------- An HTML attachment was scrubbed... URL: