UCN Facility Working Group October 3, 2012 OverviewL.Lee MCNPX and ShieldingP.Carlson Beam...
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Transcript of UCN Facility Working Group October 3, 2012 OverviewL.Lee MCNPX and ShieldingP.Carlson Beam...
![Page 1: UCN Facility Working Group October 3, 2012 OverviewL.Lee MCNPX and ShieldingP.Carlson Beam MonitorsC.A.Davis / A.Konaka.](https://reader035.fdocuments.us/reader035/viewer/2022062518/56649f275503460f94c3ecf1/html5/thumbnails/1.jpg)
UCN FacilityWorking Group
October 3, 2012
Overview L.LeeMCNPX and Shielding P.CarlsonBeam Monitors C.A.Davis / A.Konaka
![Page 2: UCN Facility Working Group October 3, 2012 OverviewL.Lee MCNPX and ShieldingP.Carlson Beam MonitorsC.A.Davis / A.Konaka.](https://reader035.fdocuments.us/reader035/viewer/2022062518/56649f275503460f94c3ecf1/html5/thumbnails/2.jpg)
UCN FacilityWorking Group
October 3, 2012
Overview L.Lee - Schedule & 2014 Shutdown - Decisions about beamline configurations - High-density shielding (Vault-1A “Plug”, UCN Pyramid) - Shielding needs (Monte Carlo studies)
MCNPX and Shielding P.CarlsonBeam Monitors C.A.Davis / A.Konaka
![Page 3: UCN Facility Working Group October 3, 2012 OverviewL.Lee MCNPX and ShieldingP.Carlson Beam MonitorsC.A.Davis / A.Konaka.](https://reader035.fdocuments.us/reader035/viewer/2022062518/56649f275503460f94c3ecf1/html5/thumbnails/3.jpg)
2011 2015201420132012 2016 2017ACTIVITY
J A J OJ A J O J A J OJ A J O J A J OJ A J O J A
Schedule( 2010-2016 )2011 2015201420132012 2016 2017
Cleanup M11,1A/1B roof-beamDismantle PIENU & M13-DS
MESON HALL (& Vault):
Core M13 I-block
Shielding
UCN APPARATUS:Spallation Target & R/HUCN Source
BEAMLINE 1U:Kicker
SeptumDipoleBeamline (incl Quads, PS,…)
Design & Review Order/Fabricate/Deliver
Test
Test
Order/Mod
Order/Fabricate
Design & Review
Design & Review Order/Fabricate InstallTest
Specify/Conceptual design
Design/Fabricate InstallUnInstall
Procure shielding blocksDesign & Review Install
COMMISSION @ TRIUMFBeamline Commissioning
HELIUM LIQUEFIER:
Upgrade He Liquefier System
He Liquefier SystemProcure
UCN Source Commissioning
Install/Test & Run @ RCNP
Procure/Install
Install
Kicker Ceramic Beamtube InstallDesign/Order Fabricate
Install
Test
MILESTONES Shutdown Activities Activities Elsewhere(KEK, RCNP, CERN, Acsion)
Non-Shutdown Activities
Mod. 1VQ4/Q5; BL1V & Shld
InstallInstall
Install
Dismantle M13-US, Mod.Shld
UCN Schedule (Draft)
Design/Order/Fabricate Test
Install
Install
Design/Fabr
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N
Kick direction (vertical or horizontal)Shielding “Plug” will need to be reconfigured
UCN Installation 2014
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Decisions aboutbeamline configurations
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Transporting the split beam from the kicker through the existing beam apertures
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![Page 8: UCN Facility Working Group October 3, 2012 OverviewL.Lee MCNPX and ShieldingP.Carlson Beam MonitorsC.A.Davis / A.Konaka.](https://reader035.fdocuments.us/reader035/viewer/2022062518/56649f275503460f94c3ecf1/html5/thumbnails/8.jpg)
![Page 9: UCN Facility Working Group October 3, 2012 OverviewL.Lee MCNPX and ShieldingP.Carlson Beam MonitorsC.A.Davis / A.Konaka.](https://reader035.fdocuments.us/reader035/viewer/2022062518/56649f275503460f94c3ecf1/html5/thumbnails/9.jpg)
UCN Installation 2015 (Option 3f)
N
T1study
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UCN Installation 2015 (Option 3g)
N
T1study
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High-densityShielding
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Shielding Plug Layout: Option-1Replace some concrete with steel blocks ( ~ 3:1 thickness ratio)
“First-Pass” study using SolidWorks 3D-Model of Meson Hall West
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Higher Density Shielding Materials
Replacing some concrete blocks with higher density material
Issues/Considerations:
- Re-use existing concrete blocks, as much as possibleCosts, Storage fewer removed blocks (potentially activated)
- Combine with denser (Steel) blocks
- Combine with denser (Hematite-aggregate concrete) blocks
Concrete/Hematite aggregate shielding blocks (from NSS)Variable/Customizable density (3.8 - 5.7 g/cc)Used at reactors (Ontario – 25 yrs), SNS, TRIUMFNSS has worked with Ellis-Don, Burnco, LaFargeNSS Meeting at TRIUMF on Sep.10, 2012 (M.Chopra)
Layout Options (“First-Pass” study):(1) Replace some concrete w/ steel blocks ( ~ 3:1 thickness ratio)(2) Replace some concrete w/ aggregate blocks ( ~ 2:1 thickness ratio)
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SolidWorks 3D-Model of Meson Hall West
CYCL.VAULT
BL1ATUNNEL
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Beampipe to BL1A
ImmovableBlock East (to T1,
T2, TNF)
Existing Shielding (Layers A-D)(UPPER LAYERS E-J HIDDEN)
Vault-1A“Plug”
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List of “Removed” Concrete Blocks: List of “New” Blocks:(2) 12’ x 6’ x 4’ (Layer A, C) (5) 2’ x 3’ x 6’ steel (Layer A)(7) 2’ x 3’ x 6’ (Layer A) (1) 2’ x 3’ x 6’ steel* (Layer A)(1) 6’ x 3’ x 2’ (Layer C) (2) 2’ x 3’ x 6’ concrete* (Layer A)(5) 2’ x 3’ x 2’ (Layer D) (1) 6’ x 3’ x 2’ concrete* (Layer C)
(6) 2’ x 3’ x 2’ steel (Layer D)(38% of existing) *block with “cut-out” for 1U beampipe
Vault-1A Shielding Layout (Layers A-D)EXISTING vs “NEW” (OPTION-1, STEEL)
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List of “Removed” Concrete Blocks: List of “New” Blocks:(2) 12’ x 6’ x 4’ (Layer A, C) (7) 2’ x 3’ x 6’ aggregate (Layer A)(6) 2’ x 3’ x 6’ (Layer A) (1) 2’ x 3’ x 6’ aggregate* (Layer A)(5) 6’ x 3’ x 2’ (Layer A, B, C) (2) 2’ x 3’ x 6’ concrete* (Layer A)(4) 2’ x 3’ x 2’ (Layer D) (1) 6’ x 3’ x 2’ concrete* (Layer C)
(8) 2’ x 3’ x 2’ aggregate (Layer D)(42% of existing) *block with “cut-out” for 1U beampipe
Vault-1A Shielding Layout (Layers A-D)EXISTING vs “NEW” (OPTION-2, AGGREGATE)
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High Density Concrete w/ AggregateNuclear Shielding Supplies and Services (NSS)
Concrete/Hematite aggregate shielding blocks – HD (3.8-5.7 g/cc) - Hematite (Fe2O3): Coarse [1” 3/8”] & Fine [3/8” 100 mesh] components
Established history of use at reactors and accelerators - Ontario Hydro (20 yrs, P.Mukherjee: Study of long-term effect on HD concrete at reactors) - BNL AGS (ilmenite, roof beams: 33 ton, blocks: 21, 11, 0.5 – 2 ton) - SNS Tunnel (hematite, 3.85g/cc, poured in place, 2000 m3) - TRIUMF
NSS has worked with Ellis-Don, Burnco, LaFarge
Used in both radiation & non-radiation applications: - high density radiation shielding - linear accelerator vaults & treatment rooms - high dose rate HDR rooms - mass concrete projects - high density concrete applications columns - gravity seawall, coastal protection & breakwater structures - bridge counterweights - ballast for ocean vessels and off shore platforms - noise and vibration dampening
Coarse Hematite
Fine Hematite
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Charles River Suspension Bridge in Boston, MA
NSS HD-concrete (Non-radiation Applications)
HD-concrete Back-spans
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Breakwater Structure Utilizing High Density Concrete
NSS HD-concrete (Non-radiation Applications)
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UCN Installation 2015/2016 (Option 3f)
N
High-densityNon-magnetic
Shielding
Dose Limit: 3 Sv/h outside of shielding
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EXTRA
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UCN Installation Schedule
N
2014 Shutdown
2015 Shutdown
2015 Non-Shutdown& 2016 Shutdown
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Optics Studies
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Vault-BL1A/1U Shielding RequirementsWhat are the requirements for the shielding “plug” with BL1U installed? (Preliminary discussions with A.Trudel) - Prompt Radiation Hazard (PRH) Study - Based on occupancy in 1A/1U tunnel with beam ON in vault:
Dose rate in accessible areas < 100 Sv/hr Annual personnel dose limits from chronic losses < 1 mSv
- Dose rate constraints for various accidental full beam loss scenarios (e.g. accidental insertion of 1A stripper, failure of 2AVB1 bender) Dose rate outside shielding < 50 mSv/hr Dose limit per full loss event < 1 mSv
How thick does the “new” shielding need to be? - Based on dose rates from various scenarios mentioned above (PRH study, simulation studies, surveys/measurements) - Design to maintain overall effective thickness (t ) in shielding “plug”
Is a Shielding-Plug “Task Force” needed?
Layout Option: Maintain effective thickness of shieldingReplace some of the concrete w/ higher density mat’l
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Vault Elements
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Existing Shielding (Layer A)(LAYERS B+C+D & UPPER LAYERS E-J HIDDEN)
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“New” Shielding Layout (Layer A)“FIRST-PASS” STUDY : OPTION-1 (STEEL)
Blue – steel, newYellow – concrete, new (w/ cut-out)
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“New” Shielding Layout (Layer A+B)“FIRST-PASS” STUDY : OPTION-1 (STEEL)
Blue – steel, newYellow – concrete, new (w/ cut-out)
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“New” Shielding Layout (Layer A+B+C)“FIRST-PASS” STUDY : OPTION-1 (STEEL)
Blue – steel, newYellow – concrete, new (w/ cut-out)
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“New” Shielding Layout (Layer A+B+C+D)“FIRST-PASS” STUDY : OPTION-1 (STEEL)
Blue – steel, newYellow – concrete, new (w/ cut-out)