Abstract
The CERN Large Hadron Collider is currently being upgraded to operate at a stored beam energy of 680 MJ through the High Luminosity upgrade. The LHC performance is dependent on the functionality of beam collimation systems, essential for safe beam cleaning and machine protection. A dedicated beam experiment at the CERN High Radiation to Materials facility is created under the HRMT-23 experimental campaign. This experiment investigates the behavior of three collimation jaws having novel composite absorbers made of copper diamond, molybdenum carbide graphite, and carbon fiber carbon, experiencing accidental scenarios involving the direct beam impact on the material. Material characterization is imperative for the design, execution, and analysis of such experiments. This paper presents new data and analysis of the thermostructural characteristics of some of the absorber materials commissioned within CERN facilities. In turn, characterized elastic properties are optimized through the development and implementation of a mixed numerical-experimental optimization technique.
Highlights
The LHC is currently being upgraded to operate at twice the stored beam energy of previous runs through the high luminosity LHC (HL-LHC) upgrade [1,2]
This paper presents new data and analysis of the thermostructural characteristics of some of the absorber materials commissioned within CERN facilities
The LHC accelerator allows for highenergy circulating beams, necessitating adequate machine protection devices during operation, such as collimators
Summary
The LHC is currently being upgraded to operate at twice the stored beam energy of previous runs through the high luminosity LHC (HL-LHC) upgrade [1,2]. The high-energy particle-matter interactions impart a nonuniform temperature increase in the impacted structure, subsequently leading to physical deformations and stress to the possible detriment of the structure functionality To analyze this behavior, tests are carried out within the High Radiation to Materials (HiRadMat) testing facility at CERN, which allows submitting targets to intense proton or ion beam impacts [14]. CuCD is appealing for use in LHC collimators due to its ability to maximize geometric stability and transient shock response, while exhibiting high electrical and thermal conductivities as well as low coefficient of thermal expansion and low densities. The final TCSP jaw exhibits distinct structural features in comparison to TCSPM jaws, while containing CFC inserts
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