12-ID Upgrade to Two Independent Beamlines - Monthly Update

Advanced Photon Source

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

May 23, 2008

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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)

3

2

3

4

5

678

1019

2

3

4

5

678

1020

Bri

llia

nce

(p

h/s

ec/m

m2 /0

.1%

)

50403020100Energy (KeV)

first harmonic U27 U30S U33S

third harmonic U27 U30S U33S

fifth harmonic U27 U30S U33S

Selection of an Undulator for 12-ID-B

C/D - U33SB - U30S in Sep 08In one year U27

B

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Layout of 12-ID Upgrade

CD

B

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Layout of 12-ID Upgrade

A Hutch

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Layout of 12-ID Upgrade

Upgrade horizontalMirror with bender

C/D LineA Hutch

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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12-ID-C/D Monochromator Upgrade

Before the upgrade After the upgrade

Diffraction type Si(111) Si(111)

Second Crystal Offset 35 mm Constant offset

20 mm Constant offset

Energy range 4.2KeV-28 KeV 4.5KeV-36 KeV

Coolant Liquid Nitrogen Liquid Nitrogen or (water)

1st Xtal Cooling type Direct cooling Indirect cooling

Diffractometer Huber Huber

Heidenheim encoder No Yes

Motor type Stepper motor Stepper motor

Vacuum 2 Ion getter pumps 10 -8 Torr 2 Ion getter pumps 10 -8 Torr 

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12-ID-C/D Monochromator Upgrade

 

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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Layout of 12-ID Upgrade

HorizontalMirror

B Line

A Hutch

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12-ID-B Beamline with a large offset Monochromator

1025.4mm678.4 mm

860

mm

C 111

51.8° (2·B1)

26.8° (2·B2)

1704.1 mm

Schematic diagram of both crystals during operation with a nominal take-off angle (2θ) of 26° ~ 52° from the centerline

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12-ID-B Beamline with a large offset Monochromator

Parameters Value

Energy range (keV) for FOE monochromator

6.9 ~ 13.0 (Diamond111)

Resolution E/E 1 x 10-4

Flux (photon/mm2/sec) 1 x 1013 @10 keV

Beam size (horiz x vert), unfocused 1 mm x 1 mm

January 2008 – Accepted bid from ACCEL for $550.2K

Ordered May 2008 $600K

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Layout of 12-ID Upgrade

New Mini-hutch

Ordered -InstalledSep 08

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Layout of 12-ID Upgrade

USAXSMirrors

VerticalMirror

New Mini-hutch

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Layout of 12-ID Upgrade

B C

DSAXS ChamberUSAXS

TRSAXS

Huber MOCVD

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Proposed 12-ID Beamlines

B Branch

C/D Branch

D

C

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Layout of 12-ID Upgrade

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Layout of 12-ID Upgrade

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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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Possible Time-line for 12-ID Upgrade

2005 - 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 partsPDR approved for mini-hutch

2008 – Order large offset mono

September long shutdownConstruction of mini-hutchInstallation of canted front end Installation of second undulator (U30s in-line)

2009 – May Shutdown Installations (depending on funding)Cant the two undulatorsLarge offset monoSAXS 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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Layout of 12-ID Upgrade

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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