12ID Upgrade to Two Independent Beamlines Monthly Update

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12-ID Upgrade to Two Independent Beamlines -
Monthly Update
May 23, 2008

• Randall Winans
• Charles Kurtz, Byeongdu Lee, Soenke Seifert
• Chemistry, Environmental, and Polymer Science
  Group
• X-ray Science Division
• Oliver Schmidt and Soon-Hong Lee
• Mechanical Engineering and Design
• APS Engineering Support Division

Advanced Photon Source
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12 - ID Upgrade to Two Beamlines with Canted
Undulators

• Versatile Anomalous and time resolved
  SAXS/WAXS/GISAXS/USAXS beamline 12-ID-C
• Technically complicated experiments which takes
  full advantage of insertion device capabilities
• Pink beam high flux for fast experiments
• Wide Q range 0.001 5.0
• Wide energy range 4.5 36 Kev
• Combined experiments XANES, MS, DSC
• Surface Scattering 12-ID-D
• MOCVD
• Diffractometer (from 12-ID-B)
• Wide energy range 4.5 36 Kev
• 40 cm mirror in 12-ID-C
• Dedicated (6.9 - 13 Kev) SAXS beamline
  12-ID-B
• Easily adjustable Q range (0.006 2.0) in
  vacuum detector
• Rapid access
• Regular access (set aside time)

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Selection of an Undulator for 12-ID-B
C/D - U33S B - U30S in Sep 08 In one year
U27
B
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A Hutch
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C/D Line
A Hutch
Upgrade horizontal Mirror with bender
The outboard x-ray beam, originating from the
first insertion device will supply beam to
12-ID-C. Initially at an outboard trajectory of
0.5 mrad of the centerline, this beam will be
deflected by the existing 1200 mm long mirror,
located at 31.4 meters from the straight section,
by 4mrad, to a total of 3.5 mrad inboard
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A design for indirect cooling of the first
crystal already implemented in 20-ID is planned
along with modifications to the 1st crystal
Compton shielding
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B Line
Horizontal Mirror
A Hutch
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12-ID-B Beamline with a large offset Monochromator
1704.1 mm
1025.4mm
678.4 mm
860 mm
51.8 (2?B1)
26.8 (2?B2)
C 111
Schematic diagram of both crystals during
operation with a nominal take-off angle (2?) of
26 52 from the centerline
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12-ID-B Beamline with a large offset Monochromator
January 2008 Accepted bid from ACCEL for
550.2K Ordered May 2008 600K
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New Mini-hutch Ordered - Installed Sep 08
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New Mini-hutch
Vertical Mirror
USAXS Mirrors
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C
B
USAXS
SAXS Chamber
D
TRSAXS
Huber
MOCVD
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Proposed 12-ID Beamlines
B Branch
C/D Branch
D
C
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Air Handling

• The hutches will be connected directly to the air
  system to maintain a more constant temperature.
• It has been observed that the 12-ID-C and B
  hutches can become very much warmer than the
  experimental hall which results in wide
  temperature swings when the doors are opened.

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• - Vacuum chamber and one shorten Undulator A
  installed
• and some canted front end parts ordered
• 2007 - Funding for mini-hutch and remaining
  canted front end parts
• PDR approved for mini-hutch
• 2008 Order large offset mono
• September long shutdown
• Construction of mini-hutch
• Installation of canted front end
• Installation of second undulator (U30s
  in-line)
• 2009 May Shutdown Installations (depending on
  funding)
• Cant the two undulators
• Large offset mono
• SAXS vacuum chamber in 12-ID-B

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12 ID Horizontal Mirror

• In April 2006 the mirror overheated to 190 C when
  the cooling water was turned off but the heaters
  remained on(heaters are used to focus the beam).
  Indium metal (mp 157 C) which is which is used to
  ensure contact with the copper cooling blocks and
  the heaters melted. From visual inspection the
  mirror appeared to be free of metal particles
• However, there appeared to be some degradation in
  performance.
• Over this long shut-down the mirror has been
  removed, inspected and characterized for slope
  error and roughness.
• A roughness on average of 5 A was measured
• The mirror is being re-installed

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12 -ID Upgrade to Two Beamlines with Canted
Undulators

• APS Strategic Plan calls for 12-ID to become a
  dedicated Small angle X-ray scattering (SAXS)
  facility.
• The 12-ID SAXS facility (FY 1996 DOE Scientific
  Facilities Initiative) is 50 of the GUP
  beamtime with x2 oversubscription.
• SAXS publications - 124 and users - 291
• The increasing demand for SAXS beam time has been
  driven by
• Research into the structure and dynamics of
  nanoscale materials
• Increased interest in soft matter
• Time-dependent structural investigations
• Plan was endorsed by the SAC review of Sector 12
  in March, 2005

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Ancillary Equipment

• Flow cells, stop flow capability
• Environmental control (heating, cooling) for in
  situ experiments
• Sample changers for high throughput experiments
• Gas flow control system for multiple and reactive
  gases
• Other complementary techniques such as mass
  spectrometry