Experimental Hutch 2

Experimental Hutch 2 (EH2) layout

Schematic of Experimental Hutch 2 (EH2).

• Red dashed line – X-ray beam direction.
• Numbers 1, 2, 3, 4 – series of interlocks, which should be activated in a predefined sequence during search procedure for taking beam into EH2
• EW – beam Entry Window
• OT – Optical Table.
• ASG and S5 slits – Anti-Scatter Guard and remotely controlled clean-up S5 slits for imaging and diffraction.
• LST – Large Sample Table.
• LDT2 – Large Detector Table with three modules M1, M2, and M3. M1 – module 1 for Large Field of View camera assembly (installation of 2D Area Diffraction detector which is off-centered relative to the beam is possible in front of Large Field of View camera assembly); M2 – module 2 for energy-dispersive detector; M3 – module 3 for custom detectors and cameras, or for 2D Area Diffraction detector, or for imaging camera modules; K – submodule of module 2 for EDXD collimator, small imaging camera, or special instruments.
• SDT2 – Small Detector table
• A1 – high-current single phase and high-current three phase power supply.
• A2 – standard single phase power supply and Ethernet connections.
• C – user chicane from EH2 to corridor.
• D – door from EH2 to corridor.
• SD – service doors from EH2 to corridor.
• V1 – first point of downstream view of EH2 (image below).
• V2 – second point of downstream view of EH2 (image below).

Downstream view of EH2 (first view point V1 on EH2 schematic above), with xyz-coordinate system (z-axis is along the beam, y-axis is vertical, x-axis is horizontal perpendicular to beam). Optics table; Anti-Scatter Guard and S5 slits; Large Sample Table; Large Detector Table with remotely controlled Module 1 (with Large Field of View camera), Module 2 (dedicated for EDXD Detector), Module 3 (with 2D Area Diffraction detector in place, other detectors can be placed here) ; Small Detector Table (empty, can be used with other detectors. Mostly used with small X-ray camera to assist sample alignment).

Downstream view of EH2 (second view point V2 on EH2 schematic above), with xyz-coordinate system (z-axis is along the beam, y-axis is vertical, x-axis is horizontal perpendicular to beam). Optics table; Anti-scatter Guard and S5 slits; Large Sample Table; Large Detector Table with remotely controlled Module 1 (with Large Field of View camera), Module 2 (dedicated for  EDXD Detector), Module 3 (with 2D Area Diffraction detector, other detectors can be placed here for custom setups), Small Detector Table (empty, usually used with small X-ray imaging camera to assist sample alignment).

More detailed drawings of EH2 (incl. CAD models) are available upon request from the I12 beamline staff.

Sample Table 2 (ST2)

1. Technical description of Sample Table 2

Sample table 2 is designed to take heavy loads of up to 2000 kg in weight. This table is in a pit in the hutch floor.

Large Sample Table (ST2) in Experimental Hutch 2 with all available motions and with small additional table on it (left); Large Sample Table (ST2) without additional table at maximum Y translataion 1000 mm (right).

2. Experimental arrangement of Sample Table 2

 
 

Possible configurations of Sample Table in EH2 with distances (in mm) from the top interface plate to the white and monochromatic beams. Your sample needs to have a height between the indicated values for exposing by X-rays. Important: for EDXD measurements available distance from top interface plate to beam is limited – please contact beamline staff for clarification if you plan to perform EDXD measurements.

Additional space is available in close proximity to the Sample Table 2. This space is allocated for the positioning of user equipment that needs connection to the sample environment, e.g. rig controllers, computers etc.

Additional space is available in close proximity to the Sample Table 2. Location of standard UK 13A single power socket, high current 32 A single power socket, and cooling water supply for user equipment (cooling water supply will be removed if users do not need it) is shown.

Large Detector Table 2 (LDT2)

The EH2 Large Detector Table (LDT2) is designed to take different detectors at the same time, each placed on a separate table module. Each module can be moved into beam position by translating the whole table along the x-direction (i.e. across the beam). This arrangement allows various detectors to be used during one experiment.

Large Detector Table in EH2 (LDT2) with Large Field of View (LFoV) camera assembly on Module 1; EDXD detector on Module 2 and EDXD collimator on submodule of Module 2; 2D Area Diffraction detector Pilatus (moved from EH1) with beamstop mounted in front of it on Module 3. Instead of EDXD collimator a small imaging camera or beamstop can be mounted on Module 2. Module 3 can be used for custom  detector setups, or for imaging camera modules (can be moved from EH1). xyz-coordinate system is shown (z-axis is along the beam, y-axis is vertical, x-axis is horizontal perpendicular to beam).

Small Detector Table 2 (SDT2)

The Small Detector Table 2 is located at the back of the EH2 at a distance 6300 mm from the sample table, and can be moved through the hutch perpendicular to the beam direction up to an angle of max. 15^o from the incident beam direction. This allows to carry out the diffraction and wide angle scattering experiments with the 2D area diffraction detector. With the table at 0^o it can be used for small-angle scattering studies of particles smaller than 16 nm.

Small Detector Table in EH2 (SDT2) with diagnostic camera installed.

Optics Table, Anti-Scatter Guard, and Anti-Scatter slits (S5 slits)

Optics table, anti-scatter guard, and anti-scatter S5 slits in EH2 in regards to Sample Table 2 with coordinate system.

The beam entry has two windows: one for monochromatic beam (upper window) and one for white beam (lower window). Switching between monochromatic and white beam takes ca. 30 min.

The alignment laser allows approximate sample and detector alignment.

The Optics table can accommodate additional equipment, which can be moved into the beam. Available motions of optics table are: x-translation: +/-150 mm; y-translation: +/-50 mm; z-translation: +/-50 mm.

Different anti-scatter guards can be installed manually during experiment to decrease the air scattering.

Remotely controlled anti-scatter S5 slits (with variable size and position) can be used. The rectangular size of these slits can be varied in both directions from 0.05 mm to 15 mm (remote control of slits’ size is important for combined tomography/diffraction experiment).

EH2 Additional Equipment

1. Power supply / Electricity
2. Cooling water
3. Pressurised gases
4. Transportation and lifting equipment
5. User chicanes for cable access between control room and hutch
6. Exhaust system
7. Signalling from and to beamline

1. Power supply / Electricity

Cooling water supply for user sample environment is available upon request. User equipment can be connected to a beamline heat exchanger. Ensure that your cooling circuit is clean!

Cooling water supply (on the left). Your equipment should have suitable connectors (on the right) and minimal length of your hose from cooling water supply to Large Sample Table 2 should be 3.5 m.

Help with transportation of large equipment can be given by prior arrangement. All equipment should be delivered on a standard EUR-pallet.

Inside the Experimental Hutch, a crane can be used for lifting equipment. The beamline electric crane with a lifting capacity of up to 5 tonnes must only be operated by beamline staff. For lifting of complex shapes, prior arrangements with the lifting crew are required. Please contact a member of the I12 beamline team to discuss your requirements.

 Examples of lifting points and lifting eyes, attached to equipment, which users should provide to make possible the movement of their equipment with a beamline crane.

 Trolley for lifting equipment out of users' car. Please, ensure the correct orientation of the pallet with your equipment in the car.

User chicanes from Experimental Hutch 2 to the corridor.

Experimental hutch 2 has installed exhaust system with a maximal flow rate of 18.3 m/s = 144 l/s in a single 100 mm diameter duct. The exhaust system can be installed above or close to Sample Table 2. Please, contact your local contact or Beamline Staff if you need to use an exhaust system.