LARP Phase II Secondary Collimator RC1

1
LARP Phase II Secondary Collimator RC1

• Collimator Test Program Status
• Revised 8/22/06

2
Jaw/Cooling Tube Joint Development

• Model of Coil Winding Test piece 200mm long x
  86mm diameter

3
Jaw/Cooling Tube Joint Development

• Section view of test Mandrel brazed to Jaw
  sections

Jaw
Mandrel
136mm dia
200mm
4
Aluminum Mandrel for Coil Winding Test
Cooling Tube aligner
200mm
5
Jaw/Mandrel/Cooling Tube Next Step
Copper Mandrel in fabrication
Stake coil to mandrel during winding to prevent
spring back
Fully annealed tubing wound into groove
Braze assembly together
Cut into sections for braze joint inspection
Machine od to eliminate distortions add wire
groove
Braze together with Jaw halves (wire foil)
Document results with photos and write-up of
process
6
Single Jaw Thermal Test Hardware Progress

• Molybdenum Shaft has order out to bid
• Is long lead (6-8 weeks) and may hold up timely
  progress
• So . Stainless Steel Shaft may be used instead
  (for this test only)
• Mandrel fabrication drawing will be completed
  this week
• And released to shop soon after
• Jaw fabrication drawing complete except final
  dimensions of I.D.
• Not released to shop yet

7
Single Jaw Heater Test Shaft

• Model of Shaft showing 1mm raised shoulder (Hub)
  at center

8
Molybdenum Shaft end detail

• Relief on O.D is for stiffening sleeve and worm
  gear mounting

Slots for tubing extend past bearing and are 180
deg offset
Relief on I.D. is for roller bearing
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Single Jaw Thermal Test Hardware

• Jaw Sections

450 mm long Jaw sections are manufactured as
quarter cylinders for fabrication accuracy and
ease of braze assembly
Only 4 or 5 flats are planned for the test and
for measurement purposes
10
Single Jaw Thermal Test Setup Progress
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Single Jaw Thermal Test Hardware
Test Lab Setup Block Diagram
Bldg Power
fuse
Heater 1 Controller
Jaw Heater 1
fuse
100 Amp Tap
Over Temperature Control
fuse
Heater 2 Controller
Jaw Heater 2
fuse
PC with LabView Software
Jaw Internal Cooling Line
Capacitec Signal Amplifier
Jaw deflection sensors
Chiller
DAC Signal Processor
Jaw thermocouples
Bldg Power
LCW Water (Supply)
LCW Water (Return)
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Development/Test Lab Layout
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Granite surface plate in Clean Tent
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16.5 kW Chiller adjacent to Clean Tent
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Power Supplies staged for installation in rack
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Instrumentation rack and computer workstation
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RC1 Design Progress

• Models and assemblies of the various Collimator
  Mounting Stands are complete
• An enlarged vacuum tank has been modeled and some
  CERN support stand modifications have been
  identified
• No fabrication drawings have been done as yet
• Layouts, calculations and models of two Jaw
  mounting as well as a rotation scheme have been
  explored.

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Plug and Play Concept for Jaw mounting
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Another View
20
Some important Jaw mounting details

• Draws on features from CERN Phase 1 Collimator

Top and Bottom RF springs (not shown) are
identical To CERN part
Positioning and Guiding Plates are similar to
CERN Design
CERN Contact RF Assy can be used
Modified CERN Pivot Tensioning Plate
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Spring Return Ratchet Actuator
Press here to rotate the worm/ratchet shaft
2 leaf springs produce linear motion
22
Ratchet, Worm and Worm Gear

• Shaft and Jaw mount details not shown for clarity

100 Tooth Worm Gear (mounts to shaft)
Single turn Worm
20 Tooth ratchet
Bearing 2X
23
RC1 Mechanical Prototype
FY07 RC1 consists of jaws, tank actuators -
evaluated for horizontal (shown), vertical (90o)
and skew (/- 45o) orientations.
FY08, RC2