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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