sxr instrument
Post on 22-Jan-2016
23 Views
Preview:
DESCRIPTION
TRANSCRIPT
1 Michael Rowenrowen@slac.stanford.edu
1SXR InstrumentFAC 6-9-09
SXR Instrument
Michael Rowen – Engineering PhysicistJune 9, 2009
2 Michael Rowenrowen@slac.stanford.edu
2SXR InstrumentFAC 6-9-09
Outline
SXR Consortium
SXR Instrument Configuration
End Stations
Funding-Spending
Schedule
Conclusions
3 Michael Rowenrowen@slac.stanford.edu
3SXR InstrumentFAC 6-9-09
SXR Consortium
The SXR instrument is being built by a consortium formed between Stanford University, the University of Hamburg, CFEL (at DESY), LBNL, and the LCLS.The instrument is a soft x-ray beam line capable of monochromatic, “white” beam and spectrometer mode operations.SXR will be operated as a general user instrument.Consortium members get a slight preference during early operation only. All experiments will be handled through the LCLS proposal process. The end stations are to be supplied by users.User may collaborate with any of groups with listed endstations (http://lcls.slac.stanford.edu/sxr/SXRTechEndStations.aspx) or propose their own systems.
4 Michael Rowenrowen@slac.stanford.edu
4SXR InstrumentFAC 6-9-09
SXR Instrument
Single pulse shutter
Transmission sample Chamber
M1 Mirror & Grating System
Exit slit & Spectrometer Detector
Photon Stopper
K-B Focusing
Optics
End Stations
(user supplied)
Beam Dump
For overview see http://lcls.slac.stanford.edu/sxr/SXRTechOverview.aspx
5 Michael Rowenrowen@slac.stanford.edu
5SXR InstrumentFAC 6-9-09
Transmission Sample System:
Simple chamber just before mono. Sample introduction and
manipulator from top. Coaxial pump laser in-coupling. Two mirrors for 800 & 400nm
The SXR Instrument will have the capability to do transmission experiments utilizing the monochromator as a spectrometer.
6 Michael Rowenrowen@slac.stanford.edu
6SXR InstrumentFAC 6-9-09
Monochromator
Upright image-fixed exit slit. Operate in monochromatic
(& spectrometer mode)
& “White” beam mode Commercial mechanical system
Varied Line Space (VLS) Plane Grating Monochromator:
7 Michael Rowenrowen@slac.stanford.edu
7SXR InstrumentFAC 6-9-09
Exit Slit Spectrometer Detector
Exit slit commercial:
Detector Design based on XTOD Imaging Detector:
10 μm resolution required
2.5x2.5mm area imaged
Use 1024x1024 camera for 120Hz data collection
Use XTOD Imaging Detector lens system
8 Michael Rowenrowen@slac.stanford.edu
8SXR InstrumentFAC 6-9-09
Refocusing Optics
SXR End Station spot spec’ed at <10x10m.
AMO K-B system has tighter specs.
Cost savings by copying AMO system.
Small modification mirrors to accommodate the different focal lengths.
SXR to clone AMO K-B system:
9 Michael Rowenrowen@slac.stanford.edu
9SXR InstrumentFAC 6-9-09
Differential Pump & Coaxial Pump Laser
Between the focusing optics and the end station there will be a differential pump to allow operation of end stations at up to 1x10-6 torr Differential pump sections double as collimators for beam containment.There will be a mirror for coaxial introduction of a pump or alignment laser. Two mirrors for 800 & 400nm
Laser in-coupling mirror
End Stations
Differential Pumping
10 Michael Rowenrowen@slac.stanford.edu
10SXR InstrumentFAC 6-9-09
End StationsEnd Stations proposed to date: (http://lcls.slac.stanford.edu/sxr/SXRTechEndStations.aspx)
CFEL-ASG Multi-Purpose (CAMP), atoms to nano-particles: Max-Planck ASG at CFELSurface Chemistry PES/XES/XAS: StanfordElectron Beam Ion Trap (EBIT): MPI Heidelberg & LLNLMomentum Resolved X-ray Scattering: Stanford & LBNL
Resonant Imaging: Stanford Liquid Jet - Chemical Dynamics: CFEL, MAX-lab & MPI Gottingen
11 Michael Rowenrowen@slac.stanford.edu
11SXR InstrumentFAC 6-9-09
SXR Funding
Stanford:$750k committed$500k at SLACRemainder available as needed
LBNL:$377k in kind design and engineering support
Hamburg/DESY:$1800k committed$1200k at SLAC $300k due in May$300k due in July
LCLS:$1500k committed and at SLAC
12 Michael Rowenrowen@slac.stanford.edu
12SXR InstrumentFAC 6-9-09
Hamburg/DESY/SLAC MoU & Funding
MoU signed off by all parties 2/24/09.
Approval to spend funds from Hamburg & CFEL 4/29/09.
Processing the long lead requisitions as quickly as possible.
13 Michael Rowenrowen@slac.stanford.edu
13SXR InstrumentFAC 6-9-09
Costs-Spending
All major SXR procurements have been at or below the budgeted amount.
The engineering effort has been on track with the available funding.
So far we have been limited by slow arrival funding and then spending approval.
Timely procurement of critical items is critical to the schedule.
14 Michael Rowenrowen@slac.stanford.edu
14SXR InstrumentFAC 6-9-09
Critical ProcurementsMono Optics:
Grating substrates delivered, QC’ed and at ruling venderRuled gratings due end SeptemberM1 Mirror due late JuneCoating at LLNL projected 4 weeks from availability gratings
Monochromator System:Awaiting placement of orderProjected delivery late November
Exit Slit:Order in processProjected delivery mid December
K-B Mirrors:Order in processProjected delivery late NovemberCoating at LLNL projected 4 weeks from availability mirrorsAssembly at LBNL
K-B Mirror System:To be built at LBNL (same group as doing the AMO K-B system)
15 Michael Rowenrowen@slac.stanford.edu
15SXR InstrumentFAC 6-9-09
Summary SXR Schedule
16 Michael Rowenrowen@slac.stanford.edu
16SXR InstrumentFAC 6-9-09
Conclusions
The SXR instrument is on a very tight scheduleOnly <2 week float to final installations during the January-February down.
The critical item is the monochromator as it is in the 1st hutch.
The critical path item are the K-B mirrors in the 2nd Hutch.
The funding hurdles are past.
There are no show stoppers at this time.
SXR should be ready for beam by the end of February 2010.
17 Michael Rowenrowen@slac.stanford.edu
17SXR InstrumentFAC 6-9-09
End Presentation
top related