cryostat assembly 17 september 2008 martin nordby, rafe schindler, gary guiffre, rick van berg

Cryostat AssemblyCryostat Assembly

17 September 200817 September 2008

Martin Nordby, Rafe Schindler, Gary Guiffre, Rick Van Berg

LSST Camera Systems Integration

2

ContentsContents

• General Cryostat section views

• Raft Tower load transfer process

• Integration fixturing

• Back end cable routing

• Front end vacuum barrier

Cryostat Section ViewsCryostat Section Views


4

Cryostat 2/3 Section Isometric ViewCryostat 2/3 Section Isometric View


5

Cryostat ¾ Section Isometric ViewCryostat ¾ Section Isometric View


6

Cryostat XZ-Plane SectionCryostat XZ-Plane Section


7

Cryostat YZ-Plane SectionCryostat YZ-Plane Section


8

Cryostat and Valve Box YZ-Plane SectionCryostat and Valve Box YZ-Plane Section

Raft Tower Load TransferRaft Tower Load Transfer


10

Raft Tower on Cryo PlateRaft Tower on Cryo Plate


11

Raft Tower Side ViewsRaft Tower Side Views


12

Raft Hold-Down Device Details: -X SideRaft Hold-Down Device Details: -X Side


13

Raft Hold-Down Device Details: +X SideRaft Hold-Down Device Details: +X Side


14

Raft Tower Hold-Down in a Grid BayRaft Tower Hold-Down in a Grid Bay

Cryostat Integration and FixturingCryostat Integration and Fixturing


16

Cryostat Assembly and Integration FlowCryostat Assembly and Integration Flow

Legend

Sensor package

L3 Lens Assembly

Raft Tower Acceptance Test

Raft Plate

Assemble, test Raft

assemblies

Assemble Raft Towers

Front End Electronics

cards

FEE Cage

Sensor-FEE flex cables

Thermal straps

Cold Plate

Cryo Plate

Grid Assembly

Cryo Shroud

Cryostat Housing

Close out Cryostat

Assembly

Install Grid, Cryo Plate,

into Cryostat

Cryostat cold functional tests

Vacuum pumps

Blank-Off Flange

Feedthrough Flange

Cryostat pressure and

leak tests

Guide sensors, electronics

Wavefront sensors,

electronics

Assemble Corner Raft

Towers

Corner Raft Acceptance Test

Raft Control Crates

Flexures

Integrate Raft Towers into

Cryostat

Integrate Corner Rafts into Cryostat

Assemble, test Instrument.

Ring

Pattern generating

gratings

X-Ray Calibration wiper arms

Close Cryostat front end

Cryostat Assy cold acceptance

teststo Page 2

LLNL

BNL

HarvardSLAC

TBD

Acceptance test (color denotes responsibility)

FEE-RCC flex cables

Support Ring

Utility Trunk structure and

panels

Valve Box

Control/Valve Panel

Install Cold Plate, back

end in Cryostat

Timing and Control module

Power and conditioning

module

Ethernet switch

Cryostat Integration and Test Sequence

Pumping chimneys,

plenum

Close Cryostat back end and Utility Trunk

Cryostat Close-out and Utilities IntegrationCorner Bay Int.Science Bay Int.

Cryostat Close-outBack End Install.Front End Install.

From LSST-2119-D, “Camera Integration and Test Flow Chart”


17

Cryostat Integration Facility—Plan ViewCryostat Integration Facility—Plan View

3'-0" wide walkway

4'-4"19'-9"

Em

erg

4'-4"

22'

-6"

Single-Bay Cold Test

Station

Raft Test Station

Cryostat Electronics

1'-0

" cl

r

A A

19'-11"

Class 10K Clean RoomCryostat Integration

3'-6

" cl

r

12'

-8"

(12'

tra

vel)

7'-0" clr

44'-0"

From LSST-6176-A, “SLAC Bldg 33 Camera I&T Facility Layout”

Metrology system Assembly stand Integration gantry Cart


18

Cryostat Integration Facility—Elevation ViewCryostat Integration Facility—Elevation View

2"1-Ton Crane min hook height

8'-6

"

Clean Room Elevation

9'-1

1"

Room 103 Elevation A-A: Integrate Raft Towers into Cryostat

44'-0"

1'-8

1/1

6"

7'-10 1/2" clr

3'-9

"

9'-6" clr

4'-6

"

11'-5 1/2"

4'-10 1/2" clr

From LSST-6176-A, “SLAC Bldg 33 Camera I&T Facility Layout”

Metrology system Assembly stand Integration gantry Cart

Cryostat with valve box in cold-test configuration


19

Cryostat Integration FixtureCryostat Integration Fixture


20

Cryostat CartCryostat Cart

Cryostat pivots around mounting points during rotation

3-point mount

Back End Cable RoutingBack End Cable Routing


22

Back End Cable RoutingBack End Cable Routing


23

Feedthrough Flange and Cable Routing from RCCFeedthrough Flange and Cable Routing from RCC


24

Back End Section ViewsBack End Section Views

Front End Vacuum BarrierFront End Vacuum Barrier


26

Cryostat VacuumCryostat Vacuum

cryostat assembly 17 september 2008 martin nordby, rafe schindler, gary guiffre, rick van berg

Documents

camera integration

integration flow

cryostat section views

rcc slide

mount slide

end section views slide

cryostat vacuum

end cable routing slide