Custom Projects: Large Monochromatic Slits (CCLRC)

These high precision slits systems provide the capability to define the neutron beam position and size, and reduce scattered neutron in the beamline. The system consists of an aluminum body supporting four blades operated on crossed-roller bearings. The design incorporates non-magnetic material and many important features for ease of operation and set-up. This project consisted of three custom slit packages for Rutherford Appleton Laboratory (CCLRC):

Slit Package 1
Maximum overall package size envelope:	Height: 156mm
	Width: 210mm
	Depth: 40mm
Maximum Aperture Size:	60mm(x) 40mm(y)
Horizontal (x) stroke:	35mm (to 5mm over Centre-Line)
Vertical (y) stroke:	25mm (to 5mm over Centre-Line)
Environmental Conditions:	Room Temperature / Atmospheric Pressure
Magnetic Signature:	Standard
Blade Composition:	5mm Cadmium
X & Y Resolution:	5 Microns
X & Y Repeatability	±10 Microns
Duty Cycle:	20 full strokes/day
Feedback:	Optical Encoder suitable for task
Quantity:	4 off
Slit Package 2
Maximum overall package size envelope:	Height: 300mm
	Width: 300mm
	Depth: 60mm
Maximum Aperture Size:	60mm(x) 40mm(y)
Horizontal (x) stroke:	60mm (to fully close aperture)
Vertical (y) stroke:	40mm (to fully close aperture)
Environmental Conditions:	Room Temperature / Atmospheric Pressure
Magnetic Signature:	Standard and Non Magnetic
Blade Composition:	5mm Cadmium, 10mm B4C, 2.5mm Lead
X & Y Resolution:	5 Microns
X & Y Repeatability	±10 Microns
Duty Cycle:	20 full strokes/day
Feedback:	Optical Encoder suitable for task
Quantities:	4 off (Standard Magnetic)
	2 off (Non-Magnetic Components)
Slit Package 3
This slit package is similar to the 60mm(x) x 150mm(y) aperture slits previously supplied for the TS1 CRISP instrument. The intention is to procure a similar system with as much of the aluminum chassis pared down as possible, with the aim of reducing the overall package size.
Maximum overall package size envelope:	Minimal possible
Maximum Aperture Size:	60mm(x) 150mm(y)
Horizontal (x) stroke:	60mm (to fully close aperture)
Vertical (y) stroke:	150mm (to fully close aperture)
Environmental Conditions:	Room Temperature / Atmospheric Pressure
Magnetic Signature:	Minimal Magnetic signature
Blade Composition:	5mm Cadmium, 10mm B4C, 2.5mm Lead
X & Y Resolution:	5 Microns
X & Y Repeatability	±10 Microns
Duty Cycle:	20 full strokes/day
Feedback:	Optical Encoder suitable for task
Quantities:	2 off

 

High-Precision Neutron Slits Delivered to LANL

This large precision slits system provides the capability to define the neutron beam position and size, and reduce scattered neutron in the beamline. The system consists of an aluminum body supporting four blades operated on crosses-roller bearings. The guillotine style jaws are made of boron nitride. The design incorporates non-magnetic material and many important features for ease of operation set-up.

 

UHV Braided Heat Sink Slit

These units consist of vertical and horizontal slit mechanisms, a double sided flange which houses them, stepper motors, and limit switches. Each of the four blades are individually controlled and motorized. The customer requested necessary modification to be implemented for the blades to withstand a heat load of 5 watts. ADC attached cupper braid to each blade in order to transfer the heat load.