1. Beamline Conceptual Design Overview and Interface Management
Andy Broadbent Experimental Facilities Division, NSLS-II
Experimental Facilities Advisory Committee Meeting
April 23-24, 2009

2. Activities Since Last EFAC Meeting
Beamline selection and design iteration;
CD-3 reviews (and approval);
BAT Meetings (reports provided);
Front End Design Progress (with ASD);
Beamline standard utilities and hutches specified;
XBPM workshop.

3. Schedule Baseline: Beamline Design Plans
CD-3 Review
Remaining design time prior to procurement start: 18 months.
Completion of design of other items: 13 months.
Procurement start
EF beneficial occupancy

4. Beamline Conceptual Design Activities
Initial conceptual layout of beamline optics;
Analysis of heat load on optics;
Heat load analysis to XFD Director (review);
Revised conceptual layout of beamline optics;
BAT technical review of beamline conceptual layout;
Initial comprehensive beamline layout (CAD model);
Ray tracing for synchrotron and Bremsstrahlung radiation;
Initial safety assessment of beamline layout;
Shadow ray tracing for performance characteristics;
List of major beamline components by sub-system;
Revise cost estimate for beamline;
Draft beamline CDR;
Safety review of beamline conceptual design;
BAT technical review of beamline conceptual design.

5. Beamline design refinement (in progress)
BAT meetings held, now incorporating recommendations
Some extremely detailed (eg SRX, despite late start), and all very useful.
Optimization of the insertion Devices
Analysis of optical configurations (started working with vendors to ensure they can meet our requirements – see later talk by Qun)
Visits to other facilities to discuss technical solutions
Engineering design activities (eg Brem and SR ray tracing)
Vibration measurements and modeling (N Simos, CFD)
Weekly meetings to discuss technical aspects.

6. Elements of a Typical Beamline WBS
Enclosures *
Generic SOW written and reviewed.
Beam transport
Utilities **
RSI document completed and signed-off.
White beam components
Work in progress (allied to FEs).
High heatload optics
***
FEA work in progress.
Beam conditioning optics
Some estimates made for mirror specifications.
PPS
EPS
End station
Significant R&D work in progress.
Beamline controls
Beamline control station
Beamline management
Insertion device (SRX only in XFD)
Much analysis performed.

7. List of Project Beamline Insertion Devices
Comment
IXS
IVU, (probably) custom
Requirement to maximize flux at 9.1 keV.
HXN
IVU, standard 3m U20
CHX
CSX
EPU custom pair
Optimization work on period (~49mm) in progress.
SRX
IVU, custom
U21, 1.5m proposed as optimized choice.
XPD
DW, standard 7m

8. Insertion Device Optimization Example
Detailed work by Oleg Chubar.
3. Calculate allowable IVU device length from gap vs length constraints, due to accelerator and space for canting magnets.
2. Plot gap required to get 4.7keV on third harmonic against period.
1. Calculate fundamental minimum energy against gap for different IVU periods.
4. Select spectrum!

9. Typical Front End Configuration
Ratchet Wall Collimator
Individual Beamline Front End Designs are ~70% Complete.
Safety Shutter (second if required)
Fast Gate Valve
Photon Shutter
XBPM
XBPM
Fixed Aperture Mask
Slow Gate Valve
Bending magnet photon shutter
Safety Shutter Collimator
X-Y Slits
Courtesy of L Doom, B Gash, PK Job, V Ravindranath, S Sharma, ASD
Collimator

10. Front End Design Progress

11. Front End Adjustable Slits
Significant value engineering performed on the slits; these will also be used on the beamlines, outside the shield wall.

12. Beamline Standard Utilities Pack
Requirements, Specifications and Interfaces document defines:
The beamline interfaces to conventional facilities and accelerator systems;
The beamline utilities at the point of usage.
Extensively reviewed and approved.
Reference document for design of beamlines.

13. XBPM Workshop: 26/27th Feb 2009
Important interface area between XFD and ASD.
Experts from APS, BNL, Cornell, Diamond, SLS, DESY.
Detailed report written, with recommendations and some possible collaborations to pursue.
Conclusions and detailed recommendations in report (many are no-, or low-cost).

14. Follow up actions from previous EFAC meetings – see handout.
All closed out.
Example, checking of “fit” of IR Front End.

15. Technical Issues: Power Quality and UPS Systems
Facility emergency power only provided for life safety systems.
No facility-wide UPS or back-up generators.
Discussion at recent CR review considering merits of UPS systems, particularly for cryocoolers;
Laboratory power quality data obtained
Assess the annual frequency – outages of >5 minutes number ~2 per annum
Average 1 storage ring trip/month at NSLS (~1 hr to restart).
Minimize the impact
Modern cryo-coolers more tolerant of outages and are single phase devices, substantiating data from recent customers
Recent direct cooled crystal seal designs are more tolerant of thermal cycles
Small UPS systems can be specified into high impact systems
Currently revisiting this topic …. goal to conclude (report) by June…

16. Interface Management – the Practicalities
VERY regular interaction with the CFD staff and the architects.
Careful review and checking of the building design submissions:
written summary of issues at 80% and 100% design submissions.
Much advice taken from other facilities.
Careful Interface Management, and co-operation of the interface managers to:
informally work with project team members from other divisions;
collaborate with Erik to setup and use sharepoint ; this is a wonderful facility resource to improve collaboration in a large team;
make effective use of meetings - set up when needed;
Arrange workshops (eg XBPM), as needed;
Hold specific working group meetings (eg IDs for long straights).

17. Cost Baseline.
Cost baseline for (User Instruments) is $65.8M with escalation and burdens.
Project initial scope is within the CD-2 baseline budget.
Refined cost estimates of high value components prior to CD-3
eg hutches, HXN remote station and tunnel, and some optics.
Will continue to refine costs and produce a cost range for CDR.
Experimental Facilities (XFD)
$65,824,486
Powder Diffraction Beamline
$9,897,480
SRX Beamline
$10,707,772
Soft X-ray Coherent Beamline
$11,239,960
Hard X-ray Coherent Beamline
$10,041,839
Inelastic X-ray Scattering Beamline
$10,435,753
Nanoprobe Beamline
$13,501,681

18. Issues and Coming Activities
Re-budgeting exercise;
As designs iterate this becomes more important;
Check prices and scope;
complete by end Sept 09 and include with CDR.
Completion of CDR;
Still a lot of work to do, but SRX has made up for late start;
Continued Engineering design and analysis:
Heat load analysis of optical elements;
Insertion device optimization.

19. Conclusions Work on the Beamline CDR documents progressing well;
End of September 2009 deadline.
Taking advice from other facilities on specific topics.
Proactive management of interfaces with CFD and ASD;
Insertion devices,
Front ends,
Building and systems.