Superconducting accelerator cavity with a heat affected zone having a higher RRR

Patent · Sat Jan 01 00:00:00 EST 2000

OSTI ID:873129

Brawley, John ^[1]; Phillips, H Lawrence ^[2]

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1. Grafton, VA
2. Hayes, VA

An improved method for welding accelerator cavities without the need for time consuming and expensive faying surface treatments comprising electron beam welding such cavities in a vacuum welding chamber within a vacuum envelope and using the following welding parameters: a beam voltage of between about 45 KV and 55 KV; a beam current between about 38 ma and 47 ma; a weld speed of about 15 cm/min; and a sharp focus and a rhombic raster of between about 9 KHz and 10 Khz. A welded cavity made according to the method of the present invention is also described.

• Research Organization: Southeastern Universities Research Associations (SURA), Washington, DC (United States)
• DOE Contract Number: AC05-84ER40150
• Assignee: Southeastern Universities Research Assn. ()
• Patent Number(s): US 6097153
• OSTI ID: 873129
• Country of Publication: United States
• Language: English

Related Subjects

superconducting
accelerator
cavity
heat
affected
zone
rrr
improved
method
welding
cavities
time
consuming
expensive
faying
surface
treatments
comprising
electron
beam
vacuum
chamber
envelope
following
parameters
voltage
45
kv
55
current
38
47
weld
speed
15
cm
sharp
focus
rhombic
raster
khz
10
welded
according
described
beam welding
affected zone
beam current
improved method
electron beam
surface treatment
sharp focus
weld speed
heat affected
accelerator cavity
surface treatments
time consuming
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