a. simonyan, v. danielyan, v. dekhtiarov,
TRANSCRIPT
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A. Simonyan, V. Danielyan, V. Dekhtiarov,
Mechanical Engineering Group
Vacuum Technology Group
Mechanical Workshop
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COPPER CAVITIES
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FABRICATION OF COPPER CAVITIES TECHNOLOGICAL PROCESSES
1. MATERIAL RESEARCH
2. 3D DESIGN TOOLS
3. PRESSING
4. PRECISION TURNNIG & MILLING
5. POLISHING
6. CHEMICAL CLEANING
7. HEAT TREATMENT-ANNEALING
8. CELLS QUALITY ASSURANCE
9. EUTECTIC BRAZING
10.RF TUNNIG
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PRECISION TURNNIG & MILLING
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RF TUNNING
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RF DEFLECTING CAVITY
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SUPERCONDUCTING NIOBIUM CAVITIES
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FABRICATION OF NIOBIUM CAVITIES TECHNOLOGICAL PROCESSES
1. MATERIAL RESEARCH
2. BLANKING (SHEARING)
3. DEEP DRAWING OR HYDROFORMING
4. PRECISION TURNNIG & MILLING
5. CELLS QUALITY ASSURANCE
6. E-BEAM WELDING
7. POLISHING & CHEMICAL CLEANING
8. HEAT TREATMENT-ANNEALING
9. RF TUNNIG
10.3D DESIGN TOOLS
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MATERIAL RESEARCH
ANALYTICS & QUALITY CONTROL OF Nb SHEET
• LOCAL DEFECTS, SMALL SPOTS, THERMAL
BREAKDOWN (QUENCH)
• O, N, C, Ta ,H DESIGN TOOLS DETERMINATION
• NON-DESTRUCTIVE ELEMENT ANALYSIS
• VISUAL INSPECTION
• PHISICO- MECHANICAL PROPERTIES
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Nb RESEARCH
Yield Strength --- 70-80 N/mm2 Tensile Strength --- 164-168 N/mm2 Elongation --- 55 -58 %
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DEEP DRAWING
63t press for 2.8t Nb half cell (1300MHz)
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Broken part of half-cell during deep drawing
Half-cell after deep drawing. Broken part of beam-pipe transition
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SPINNING PROCESS
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HYDROFORMING PROCESS
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HYDRAULIC DEEP DRAWING
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E-BEAM WELDING
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POLISHING & CHEMICAL
CLEANING
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ACCELERATOR COMPLEX PRECISION
DETAILS
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RF TUNNING
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3D DESIGN TOOLS
CAD
CAM
CAE(FEM)
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TEMPERATURE DISTRIBUTION
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THANK YOU FOR ATTENTION
THANKS TO
KLAUS FLOETTMANN & WALDEMAR SINGER
DESY GERMANY