Document Type

Conference Paper

Publication Date


Publication Title

North American Particle Accelerator Conference Proceedings



Conference Name

North American Particle Accelerator Conference, Pasadena, California, September 29-October 4, 2013


The proposed LHC high luminosity upgrade requires two crabbing systems in increasing the peak luminosity, operating both vertically and horizontally at two interaction points of IP1 and IP5. The required system has tight dimensional constraints and needs to achieve higher operational gradients. A proof-of-principle 400 MHz crabbing cavity design has been successfully tested and has proven to be an ideal candidate for the crabbing system. The cylindrical proof-of-principle rf-dipole design has been adapted in to a square shaped design to further meet the dimensional requirements. The new rf-dipole design has been optimized in meeting the requirements in rf-properties, higher order mode damping, and multipole components. A crabbing system in a cryomodule is expected to be tested on the SPS beam line prior to the test at LHC. The new prototype is required to achieve the mechanical and thermal specifications of the SPS test followed by the test at LHC. This paper discusses the detailed mechanical and thermal analysis in minimizing Lorentz force detuning and sensitivity to liquid He pressure fluctuations.


Published under a Creative Commons Attribution 3.0 unported license.

Original Publication Citation

De Silva, S. U., Park, H., Delayen, J. R., & Li, Z. (2013). Mechanical Analysis of the 400 MHz RF-Dipole Crabbing Cavity Prototype for LHC High Luminosity Upgrade. Paper presented at the North American Particle Accelerator Conference, Pasadena, California.


0000-0002-4809-9439 (De Silva), 0000-0002-8222-8740 (Delayen)