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Title: Laser Polishing: Green Path to Improved Accelerator Surfaces

We pursued three paths toward reducing the initial cost and operating expense of particle accelerators. First, we investigated laser surface melting as an alternative to the present cavity processing approach using noxious chemicals. We successfully demonstrated a process that can be scaled up and defined the path to do so. Second, we sought to develop tailored laser pulsing as a way to simulate the thermal fatigue environment responsible for damaging accelerator components. Though the first three steps along the path were successfully accomplished, the final segment depended on collaborators with unique facilities, whose program was terminated. The third segment aimed to acquire a fundamental understanding of the widely used chemical process that yields the rough surfaces smoothed by laser melting. We found that the roughness is an inherent and unavoidable outcome that limits the performance of components processed thusly.
Authors:
 [1]
  1. College of William and Mary, Williamsburg, VA (United States)
Publication Date:
OSTI Identifier:
1222599
Report Number(s):
DOE-WilliamMary--SC0007907
TRN: US1600083
DOE Contract Number:
SC0007907
Resource Type:
Technical Report
Research Org:
College of William and Mary, Williamsburg, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; MINIMIZATION; LASERS; ACCELERATORS; SURFACES; MELTING; POLISHING; THERMAL FATIGUE; ROUGHNESS; CAVITY RESONATORS; COST; PERFORMANCE; PROCESSING; PULSES