Neutron Optics (W17)

Coordinator: , LLB/CEA

Objectives

The main aims of this Joint Research Activity have been to develop neutron optics technology for high flux reflectometry, using super-mirrors, as well as the development of new focusing optics devices. More information about the specific tasks is available here.

Each thematic task gathers instrument scientists who are experts in their fields (reflectometry, SANS , diffraction or imaging) and who have a direct interest in improving their spectrometers. Most of the proposed developments are being implemented on existing spectrometers and will benefit the wider neutron community.

Most of the optics developments require advanced numerical simulations. Monte-Carlo simulation programs have been upgraded or rewritten to include new advanced components and optimization tools. This will also be of benefit to a wide community.

Please see this page for the last technical update. Watch the video below for more information about the work carried out at HZB.

Nikolay Kardjilov Nikolay Kardjilov

Nikolay Kardjilov talks about the work carried out at the Helmholtz-Zentrum Berlin on elliptic focusing guides.The pictures below provide more information.

Neutron Optics Picture gallery

Focussing guides
Focussing guides
Tomography set up at HZB
Tomography set up at HZB
Results
Results
Elliptic guide
Elliptic guide
Nikolay Kardjilov on CONRAD
Nikolay Kardjilov on CONRAD
Nikolay Kadjilov on CONRAD
Nikolay Kadjilov on CONRAD
Figure 2
Figure 2

(a) Measurement scheme for the fixed substrate (gray) with coating (blue). The beam (red) was scanned along the y-direction and measured with a position sensitive detector. (b) Intensity map (white means zero, black maximum intensity of 3000 cts) as a function of the incident beam position y and the position on the detector (ordinate, measured in channels of 0.78mm width). The 8.6mm high beam is focussed on a 1.6mm high region.

Figure 3
Figure 3

Example of a neutron ray travelling through a mirror guide (thick black lines) with inserted wedge mirrors (thick blue line). Neutron path in green, reflecting on the guide wall, the inserted wedge, and eventually being transmitted.