Numerical simulations and analyses of beam-induced damage to the Tevatron collimators
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Fermilab
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
Numerical simulations are performed to analyze the Tevatron collimator damage happened in December 2003 that was induced by a failure in the CDF Roman Pot detector positioning during the collider run. Possible scenarios of this failure resulted in an excessive halo generation and superconducting magnet quench are studied via realistic simulations using the STRUCT and MARS14 codes. It is shown that the interaction of a misbehaved proton beam with the collimators result in a rapid local heating and a possible damage. A detailed consideration is given to the ablation process for the collimator material taking place in high vacuum. It is shown that ablation of tungsten (primary collimator) and stainless steel (secondary collimator) jaws results in creation of a groove in the jaw surface as was observed after the December’s accident.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 825612
- Report Number(s):
- EPAC--2004-MOPLT115; FERMILAB-CONF--04-101-AD; 653883
- Country of Publication:
- United States
- Language:
- English
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