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Quick X-ray Absorption and Scattering (QAS) Beamline 07-BM Instrument Readiness Overview
Quick X-ray Absorption and Scattering (QAS) Beamline 07-BM Instrument Readiness Overview
Steven Ehrlich, QAS Lead Beamline ScientistInstrument Readiness Review August 30, 2017
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OutlineOutline
• Background• Scientific Program and Beamline Parameters, IRR Scope,
Beamline Layout, Commissioning Sequence
• Pillar I: Documentation:• Ray Tracing, RSC Review, Design Reviews, Hazard
Identification and Mitigation
• Pillar II: Hardware– Radiation Safety Components, Other Credited Controls, Utilities,
EPS, Controls, Diagnostics
• Pillar III: Personnel– Beamline Staff
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Scientific ProgramScientific Program
• Proposed to serve chemical and energy sciences community• Scientific program moving from NSLS beamlines X18A, X18B, high energy
part of X19A
• Development of new chemical processes and catalysts• Development of energy conversion and energy storage products• Measure reactions on sub-second and longer time scales
Separate and combined measurements of XAFS and XRD as well as DRIFTSand Raman spectroscopy with analysis of gas phase by mass spectrometry(RGA)
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Beamline ParametersBeamline Parameters
Photon Source 3‐pole wiggler
Energy Range 4700 eV – 31000 eV
Monochromator Double crystal channel‐cut Si(111)
Energy Resolution (ΔE/E): ≈ 10‐4
Beam size at sample 1.8mm (V) x 10mm (H) (collimated, unfocused)<0.5mm (V) x 1.0mm (H) (toroidal focusing mirror)
Flux at sample at 500 mA: 7.9x1011 ph/s at 10 keV; 2.9x1011 ph/s at 20 keV
Detectors Ion chambers, Si drift detectors, area detector
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IRR ScopeIRR Scope
IRR Scope Includes:1. 07-BM Front End and 3PW Source2. Photon Delivery System (GV2 through 07-BM-B)3. Enclosures: 07-BM-A, 07-BM-B, 07-BM-C4. FE and Photon Delivery System Diagnostics5. EPS, PPS, all infrastructure necessary for commissioning the Photon
Delivery System6. Installation and basic control of experimental table and sample stage
IRR Scope Excludes:1. Area detector system and controls2. Detector controls and integration
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Self-Identified Pre- and Post-Start FindingsSelf-Identified Pre- and Post-Start Findings
Pre-start findings:
None
Post-start findings:
None
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Collimating Mirror 11.70m
XY Slits 9.98m
Safety Shutters
Photon Shutter
Diagnostic 20.38m
Be Window 9.10m
Three Pole Wiggler
BM Photon Shutter
GV1
GV3
• Horizontal fan = 2 mrad• Vertical fan = 0.3 mrad• 4 Fixed masks• 2 Collimators• 1 Shadow shield
GV4
Beamline Layout - Front EndBeamline Layout - Front End
Diagnostic 13.00m
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Beamline Layout – Photon DeliveryBeamline Layout – Photon Delivery
M1DCMM2
0 m 3PW source11.7 m M1: Collimating mirror26.2 m X-Y slits (SLT1) with drain current28.5 m DCM: Si(111) monochromator30.0 m M2: Toroidal focusing mirror45.0 m Sample position
SLT1
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Hutch A
Hutch BHutch C
Shielded Transport Pipe
Beamline Layout – Location on the FloorBeamline Layout – Location on the Floor
ISSTES
SST 1 & 2BMM
LOB3
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Commissioning SequenceCommissioning Sequence
1. Using low current ops, steer the beam into the end station, exercising all beamline diagnostics; reduce vertical beam size to fit on mirror
2. Perform all radiation survey activities
3. Align M1 and collimate for maximize energy resolution
4. With M1 optimized, test, characterize and optimize the performance of the monochromator
5. Align, focus and characterize the performance of the focusing mirror M2
6. For all combinations of x-ray energy, focused and unfocused beam, and end station location, create a lookup table of beamline configurations, allowing efficient planning and execution of different experiments
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Photon Shutter(PSH)
Ray TracingRay Tracing
Shielded Transport Pipe
Fixed mask 1 (MSK1)
Collimator 1/Brem Stop (CO1/BRS)
Fixed mask 2 (MSK2)
Pink Beam Stop (PBS1)
PD-QAS-RAYT-0001 Prepared using Sync and Brem Ray Trace Procedure (PS-C-XFD-PRC-008)
Shielding Strategy:1. Primary Bremsstrahlung and Pink Beam is stopped in FOE. Only
Monochromatic beam exits FOE.2. Secondary Bremsstrahlung is contained in FOE. No need for secondary
shielding.
Ratchet Wall Collimator
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Ray Tracing: Synchrotron BeamRay Tracing: Synchrotron Beam• White beam intersects front end
mirror (M1) (80W)• Fixed mask 2 stops white beam
when M1 is lowered from beam path
• Pink beam is transported into FOE (70W)
• Pink beam stopped in FOE at Pink Beam Stop (PBS1), downstream of monochromator
• Mirror 2 reflects beam up into end station (~1.3mW)
• Shielded transport pipe protects against monochromatic beam mis-steered by M2
• Monochromatic beam stopped at beam stop 1 (hutch B) or beam stop 2 (hutch C)
Beam stop 2
Beam stop 1
Shielded transport pipe
MSK1MSK2PBS1
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Ray Tracing: Primary BremsstrahlungRay Tracing: Primary Bremsstrahlung
• Primary Bremsstrahlung stopped in FOE at Collimator 1 / Brem. Stop (CO1/BRS)
CO1/BRS
Ratchet wall collimator
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Bremsstrahlung Stop DetailsBremsstrahlung Stop Details
Oversized to help minimize secondary Bremsstrahlung from Front End
No secondary Bremsstrahlung shielding needed
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RSC ReviewRSC Review
Took place 8/15/17
Conclusions
Based on our assessment of the ray-tracing drawings and radiation simulation results, the RSC find that the QAS beamline shielding design meets the NSLS-II shielding policy. Subject to experimental verification by radiation survey, we believe the installed shielding will provide adequate personnel protection for normal operation and against failures of synchrotron orbit.
Based on our review of the max. synchrotron ray-tracing drawings, the RSC believes that the QAS masks, collimating mirror, white- and pink- beam-stops are adequately designed to protect against thermal failure of shielding components.
Based on our review of the beamline layout, the RSC finds that all Radiation Safety Components meet NSLS-II design requirements.
To conclude, we recommend that the QAS ray-tracing be approved.
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Radiation Survey ProcedureRadiation Survey ProcedureRadiation Survey Procedure NSLSII-7BM-PRC-001• Survey of Front End to be completed before beamline survey• Check integrity of FOE enclosure, FOE photon shutter, and transport pipe by
surveying with FE & FOE slits open, and FOE photon shutter closed: • Beam on PBS1 (with flat mono)• Beam on Mono • Mono beam on Toroidal Mirror
• Check integrity of transport pipe, and B and C hutch enclosures, by surveying with FE & FOE slits open, and FOE photon shutter open:
• Mono beam in hutch B with incident beam slits open• Mono beam on hutch B incident beam slits• Mono beam on target at sample position and beam stop in hutch B• Mono beam on target at sample position and beam stop in hutch C• First comprehensive radiation survey (CRS at 120mA); allowed to take
up to 3 times the beam current after each CRS
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Design ReviewsDesign ReviewsEvent Date
QAS Beamline PDR 5/26/15
FOE hutch PDR, FDR (GPS) 4/8/15;, 4/23/15
Hutches B and C PDR, FDR (Caratelli) 5/11/15, 6/16/17
BM and 3PW Front end FDR 6/25/15
Collimating Mirror FDR 10/8/15
BAT Meeting 1 11/19/15
Shielded beam transport FDR (Cinel) 2/18/16
Primary Shielding FDR 1/12/17
BAT Meeting 2 5/1/17
RSC Review
• Major optical and end station components repurposed from NSLS and modified to NSLS-II standards
• All ATS items and DRs resolved
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Hazard Identification and MitigationHazard Identification and Mitigation
• USI evaluation is negative• Relevant BNL/NSLS-II safety procedures and practices are followed
during design/construction and commissioning (SBMS & ISM)
Hazard Mitigation
Radiation Shielding, PPS, no ARM needed
Cryogenics ODH system installed in 07‐BM‐B for LN2
Fire Fire detection system installed in hutches 07‐BM‐A, B, C
Hazardous material ‐ Lead Painted and/or covered
Pressure Safety FEA calculations, over‐pressure tests, burst disks
Electrical EEI, grounding, installation according to code
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Shielded Enclosures and Transport PipesShielded Enclosures and Transport Pipes
Hutch A (FOE, pink beam hutch):• Lateral wall: 18 mm lead• Downstream wall: 50 mm lead• Roof: 4 mm lead
Transport section:• Transport pipe: 5 mm lead• Ion pump enclosure: 5 mm lead
Hutch B and C (mono beam hutches)• Side walls: 3 mm steel• Upstream wall: 3 mm steel• Downstream wall: 6 mm steel• Roof: 2 mm steel• Beam stops: 0.5m x 0.5m x 12 mm
thick lead
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Radiation Safety ComponentsRadiation Safety Components
Synchrotron Beam:• In FE, white beam intercepted by M1 or stopped by FE fixed mask 2• Masks 1 and 2 (MSK1 and MSK2) in FOE limit pink beam trajectory• Pink beam that passes monochromator stopped by pink beam stop (PBS1) • Photon shutter in FOE• Beam stops in hutches 07-BM-B and 07-BM-CBremsstrahlung: FE collimation, FOE primary collimator/stop (CO1/BRS)
white beampink beammonochromatic beam
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Other Credited Safety ComponentsOther Credited Safety Components
Oxygen Deficiency Hazard (ODH) Monitor in Hutch 07-BM-B
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UtilitiesUtilities
• Electric dirty power + single and 3-phase 208V• Gases: compressed air, gaseous nitrogen• Process chilled water in racks, heat exchanger on mezzanine, in
hutches 07-BM-B, 07-BM-C and on pylon; experimental LN2 in 07-BM-B• No DI water
Utilities in FOE Utilities Distribution via Pylon End Station Utilities
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Equipment Protection SystemEquipment Protection System
• Pressures, temperatures and flow rates are measured recorded and displayed
• Easy to understand screens allow beamline staff to monitor component status
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ControlsControls• Motors and actuation required for first light have been tested• EPICS software ready
Motor controllers on roof of hutch 07-BM-B
7-BM launch page
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DiagnosticsDiagnostics
Fluorescent screen downstream of focusing mirror (FOE)
Fluorescent screen downstream of monochromator (FOE)Fluorescent screen
downstream of front end mirror (FE)
X-Y slits drain current (FOE)
Also, fluorescent screens in fixed mask 2 downstream of front end mirror (FE)
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QAS Beamline StaffQAS Beamline Staff
Lead Beamline Scientist Steven Ehrlich
Authorized Beamline Staff
Klaus Attenkofer (ISS Lead Beamline Scientist)Paul Northrup (TES Lead Beamline Scientist)Syed Khalid (Research Engineer)Eli Stavitski (ISS Beamline Scientist)
Beamline Supporting Staff Mike Caruso (Program Technician)Chanaka De Silva (Controls Engineer)
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QAS Beamline Project StaffQAS Beamline Project StaffMechanical Engineer –Lukas Lienhard
Mechanical Techs – Gary Nintzel and Mike Caruso
Project Manager – Julian Adams
Controls Engineer –Chanaka De Silva
Design Engineer – Mike Johanson