SNS HYSPEC (Beamline 14B) Technical Discussion September 2012 - - PowerPoint PPT Presentation

▶
sns hyspec beamline 14b technical discussion
SMART_READER_LITE
LIVE PREVIEW

SNS HYSPEC (Beamline 14B) Technical Discussion September 2012 - - PowerPoint PPT Presentation

Nov 06, 2022 49 likes •340 views

SNS HYSPEC (Beamline 14B) Technical Discussion September 2012 David C. Anderson Melissa Harvey HYSPEC Timeline CD0 (Mission Need) in May 2003 Mark Hagen hired as Lead Scientist in 2003 CD1 (Preliminary Baseline Range) in April 2004

slide-1
SLIDE 1

SNS HYSPEC (Beamline 14B) Technical Discussion

September 2012 David C. Anderson Melissa Harvey

slide-2
SLIDE 2

2 Managed by UT-Battelle for the U.S. Department of Energy ISIS Design and Engineering Meeting September 2012

  • CD0 (Mission Need) in May 2003
  • Mark Hagen hired as Lead Scientist in 2003
  • CD1 (Preliminary Baseline Range) in April 2004
  • Engineering began on HYSPEC in 2004, when Bill Leonhardt was

hired to be the lead engineer for the instrument

  • Work continued at Brookhaven National Laboratory (BNL) until

June 2005, when Mark Hagen relocated to oak Ridge

  • CD2 (permission to proceed into detailed design) achieved in

October 2005

  • CD3 (procurement phase) in 2006
  • Anderson replaces Leonhardt as Lead Engineer in April 2008
  • CD4 (Project Complete) in August 2011

HYSPEC Timeline

slide-3
SLIDE 3

3 Managed by UT-Battelle for the U.S. Department of Energy ISIS Design and Engineering Meeting September 2012

Beamline Components

Detector Vessel Drum Shield to Sample Arm + Sample Stage Drum Shield + Focusing Crystals Chopper Box B

T1b disk chopper T2 Fermi chopper Secondary shutter Isolation valve

Chopper Box B Shielding 15-33m Shielding + Curved Guide 6-15m Shielding Chopper Box A

T0 chopper T1a disk chopper

3He Polarization Analyzer

BSI CVI Shutter Insert

slide-4
SLIDE 4

4 Managed by UT-Battelle for the U.S. Department of Energy ISIS Design and Engineering Meeting September 2012

Shielding

6~15m Stacked Shielding 15~33m Shielding Chopper Box B Shielding 6~15m Poured in Place (PIP) Shielding

6~15m Shielding is all High Density Concrete

Drum Shield is made from High Density Concrete, Lead and B4C

15~33m and Chopper Box B Shield is regular weight concrete except for 1 block next to the drum shield

HDC Roll Up Door Shielding Borated Panel Shielding (Borated Polyethylene with Aluminum skins, painted with B4C loaded paint)

Z, beam direction (cm) Y (cm)

200 400 600 800 1000 1200 1400 1600 1800

  • 600
  • 400
  • 200

200 400 600

0.01 0.1 0.25 0.5 1 3 10 100 1000

Total dose (mrem/hr)

 

  • Shielding is qualified

both Seismically and by Neutronics Analysis

slide-5
SLIDE 5

5 Managed by UT-Battelle for the U.S. Department of Energy ISIS Design and Engineering Meeting September 2012

SNS Standardized Shielding Design

Friction Connections for Stacked Shielding Blocks Leveling Screw Steel Tie- Down Plate Poured-in- Place Concrete Anchor 1”-8 UNC - counterbore 2-1/4" dia x 1" deep Tapped Hole 1”-8 UNC for Tie-Down Rod

1" Recommended Grout Thickness 1/2" Minimum Grout Thickness under Boss (if used)

Boss (if used) Tie-Down Details for Stacked Shielding Blocks Mounted on Poured-in-Place Shielding

  • 7.0 STANDARDIZATION OF MECHANICAL COMPONENTS
  • HYSPEC Shielding

construction follows the SNS Standard Design

slide-6
SLIDE 6

6 Managed by UT-Battelle for the U.S. Department of Energy ISIS Design and Engineering Meeting September 2012

SNS Standardized Shielding Design

Steel “can” (exterior surfaces painted or plated as required by Neutron Physics) Stiffener panels Three tapped lifting holes – location to be determined by CG of assembly Guide Tubes for Hold- down Rods and Nuts – perpendicularity to be 1/16” Typical Steel-Encased Concrete Shielding Block (Swivel Hoist Ring Option) – Preferred Method of Construction – Nelson studs omitted for clarity SING0350M8U8703A020-1 Guide Tubes for Hold-down Rods and Nuts – perpendicularity to be 1/16” Nelson studs Horizontal Tension Rod Steel Encasement sides removed for clarity Typical Steel-Encased Concrete Shielding Block (Swift-Lift Option) – Alternate Method of Construction – reinforcing bar omitted for clarity VULC0752M8U8707A012-1

slide-7
SLIDE 7

7 Managed by UT-Battelle for the U.S. Department of Energy ISIS Design and Engineering Meeting September 2012

CORE VESSEL INSERT BULK SHIELD INSERT

Upstream Optics

Shutter Insert

  • Procured and

installed very early in the Project

slide-8
SLIDE 8

8 Managed by UT-Battelle for the U.S. Department of Energy ISIS Design and Engineering Meeting September 2012

  • Vertical axis T0 Chopper procured from SKF Magnetic, operates at 30Hz and 60Hz
  • Upstream Disk Chopper operates at 60Hz (frame overlap)
  • Downstream Disk Chopper operates at 60Hz (order suppression)
  • Straight, short bladed, Fermi chopper which can run at 30, 60, 90, 120,…, 420Hz

(this is the chopper that monochromates the beam) – nominal frequency is 180Hz T0 Chopper Beam Guide Disk Chopper Fermi Chopper Gate valve Secondary shutter

Choppers and Beam Guide

slide-9
SLIDE 9

9 Managed by UT-Battelle for the U.S. Department of Energy ISIS Design and Engineering Meeting September 2012

  • Detail Design took ~10 months
  • Design began at Brookhaven National

Laboratory with one engineer and one designer

– Used AutoCAD and Inventor

  • Completed at SNS with as many as three

engineers and four designers working simultaneously

– Used Pro-E

  • Weighs ~120,000 pounds
  • Rotates from 14°to 90°
  • Contains 2 monochromators
  • Serves as primary beam stop for the

instrument

Drum Shield

slide-10
SLIDE 10

10 Managed by UT-Battelle for the U.S. Department of Energy ISIS Design and Engineering Meeting September 2012

Drum Shield Construction

Material Pb HDC SS B4C NEUTRON FLUX Bearing Sample Table Mounting Plug Focusing Crystals & Translating Mechanism Shutter Guide Field Insert Drum Shield to Sample Arm

  • Gray = High Density concrete
  • Pink = Lead
  • Dark Gray = B4C
slide-11
SLIDE 11

11 Managed by UT-Battelle for the U.S. Department of Energy ISIS Design and Engineering Meeting September 2012

Manufacturing

Forming Welding MAXUS™ B4C / Aluminum parts Lead Casting

slide-12
SLIDE 12

12 Managed by UT-Battelle for the U.S. Department of Energy ISIS Design and Engineering Meeting September 2012

Drum Shield Installation and Testing

Heusler Crystal Array HOPG Crystal Array

slide-13
SLIDE 13

13 Managed by UT-Battelle for the U.S. Department of Energy ISIS Design and Engineering Meeting September 2012

  • Drum Shield to Sample Arm was designed

to carry the 16T compensated magnet (2.2 tons) with minimum deflection.

  • Linear table moves the sample from 1.4m

to 1.8m from Drum Shield rotation axis

Drum Shield to Sample Arm

Drum Shield to Sample Arm Weldment linear table Hanger Box Assembly Beamstop Assembly consisting of TC-16 lifting column and Beamstop Shield Assembly Beamstop Mount Weldment

fabricated component Purchased part Subassembly with both fabricated and purchased components

slide-14
SLIDE 14

14 Managed by UT-Battelle for the U.S. Department of Energy ISIS Design and Engineering Meeting September 2012

HYSPEC Detector Vessel Overview

Welded Rectangular Aluminum Tubes FEA Optimized Connector Electronics racks mounted to top of vessel Mast for “ship to shore” cables Mounting plates for 3He Filling Station Air cylinders for flapping ears Insides lined with 0.06”t Cadmium Shielding

  • Detail Design took one engineer

and four designers ~7 months

  • All non-magnetic materials

(mostly aluminum)

  • Weighs ~9,000 lbs
  • Hovers ~25 mm on 20 airpads
  • Holds 20 “8 packs” of 1.2m long

Linear Position Sensitive Detectors (LPSD’s)

Mounting for 3He Polarization Analyzer or Supermirror Polarization Analyzer

slide-15
SLIDE 15

15 Managed by UT-Battelle for the U.S. Department of Energy ISIS Design and Engineering Meeting September 2012

Detector Vessel Overview

  • Filled with low pressure Argon
  • Large rear window required to

keep detectors in air

  • Ship to shore lines carry data,

power, air etc.

  • can carry a fine radial collimator

– for unpolarized or 3He polarization analysis (will also work with 16T magnet)

  • Front is also able to carry the

Helmholtz coils for 3He analyzer system

Fine Radial Collimator Detectors Ship to Shore Lines Drum Shield to Sample Arm

slide-16
SLIDE 16

16 Managed by UT-Battelle for the U.S. Department of Energy ISIS Design and Engineering Meeting September 2012

Detector Vessel Front End

Removable hatch for course collimator access Front section removable 1/8” O-Ring ¼” O-Ring (Hidden) Course Collimator Titanium Fasteners 0.5mm thick Aluminum Window Flapping Ears

slide-17
SLIDE 17

17 Managed by UT-Battelle for the U.S. Department of Energy ISIS Design and Engineering Meeting September 2012

Detector Vessel

Argon Inlet/Outlet Ports Lifting Features Bolted on gussets connect rear of skin to base 20 Airpads

slide-18
SLIDE 18

18 Managed by UT-Battelle for the U.S. Department of Energy ISIS Design and Engineering Meeting September 2012

Rear Window

Rear Window is 62.25” tall x ~200” long x 0.063” (1.6mm) thick Captured between two frames, sealed with an O- Ring Rear frame has vertical ribs to limit

  • utward deflection and stress
slide-19
SLIDE 19

19 Managed by UT-Battelle for the U.S. Department of Energy ISIS Design and Engineering Meeting September 2012

  • Window thicknesses and

construction were determined through iterative FEA

  • Large rear window required ribs to

limit deflection and keep stress low

– Ribs strategically placed to avoid shadowing detectors

Window Analysis

slide-20
SLIDE 20

20 Managed by UT-Battelle for the U.S. Department of Energy ISIS Design and Engineering Meeting September 2012

  • Design of vessel was optimized

through iterative FEA

  • Highest stresses, most difficult

design was connection to rotation stage

  • Controlling deflection at rear of

vessel was also challenging

Design Through Analysis

slide-21
SLIDE 21

21 Managed by UT-Battelle for the U.S. Department of Energy ISIS Design and Engineering Meeting September 2012

Rotation

AZ Systemes MR 400 Rotation Stage Torque limiting (12Nm) coupling Apex Dynamics Low Backlash 50:1 Gearhead Parker HV341 NEMA34 Single Stack Stepper Motor with U.S. Digital Encoder 17-4 PH Stainless Steel, 110 ksi min Yield Strength 6061-T6 Aluminum Baumer absolute encoder (not shown)

slide-22
SLIDE 22

22 Managed by UT-Battelle for the U.S. Department of Energy ISIS Design and Engineering Meeting September 2012

Installation of Detector Vessel

Nose section is reattached Detector and general electrical installation

slide-23
SLIDE 23

23 Managed by UT-Battelle for the U.S. Department of Energy ISIS Design and Engineering Meeting September 2012

Leak Testing

Ultrasonic leak testing at Vendor site Helium “sniffing” On Site leak testing

slide-24
SLIDE 24

24 Managed by UT-Battelle for the U.S. Department of Energy ISIS Design and Engineering Meeting September 2012

Dance Floor

slide-25
SLIDE 25

25 Managed by UT-Battelle for the U.S. Department of Energy ISIS Design and Engineering Meeting September 2012

  • Not including choppers or primary shutter, has 24 axes of motion
  • Secondary shutter – 1 axis
  • Focusing crystal mechanism – 9 axes (tilt, translate, rotate, focus

x 2 + lift)

  • Drum shield – rotate, swing arm, translate pin, rotate tertiary

shutter = 4 axes

  • Drum Shield to sample arm – translate sample, translate

beamstop, rotate detector vessel = 3 axes

  • Sample table – rotate, translate x2, tilt x 2 = 5 axes
  • Detector vessel – rotate ears x 2 = 2 axes

Motion

slide-26
SLIDE 26

26 Managed by UT-Battelle for the U.S. Department of Energy ISIS Design and Engineering Meeting September 2012

Detector Vessel Motion

slide-27
SLIDE 27

27 Managed by UT-Battelle for the U.S. Department of Energy ISIS Design and Engineering Meeting September 2012

Drum Shield Motion

slide-28
SLIDE 28

28 Managed by UT-Battelle for the U.S. Department of Energy ISIS Design and Engineering Meeting September 2012

Drum Shield Swinging Arm Lock Motion

slide-29
SLIDE 29

29 Managed by UT-Battelle for the U.S. Department of Energy ISIS Design and Engineering Meeting September 2012

Flapping Ears, “Beamstop” and Cam