[D66] CROCUS research reactor

[René Oudeweg]

[mozes- en krokuskriebels! /RO]

$describe "CROCUS" en --exact
en:
CROCUS
CROCUS is a research reactor at École Polytechnique Fédérale de 
Lausanne, a research institute and university in Lausanne, Switzerland.
The uranium nuclear reactor core is in an aluminium container that 
measures 130 centimetres (51 in) across with 1.2-centimetre (0.47 
in)-thick walls.  The aluminum vessel is filled with demineralized light 
water to serve as both a neutron moderator and a neutron reflector.Power 
output is controlled either by adjusting the water level in the 
reactor—with a ±0.1-millimetre (0.0039 in) level of control, or with the 
adjustment of two boron carbide (B4C) control rods—with a ±1-millimetre 
(0.039 in) level of finesse.  The reactor has six separate safety 
systems: two cadmium shields and four storage tanks, any of which can 
shut down the reaction in less than a second.CROCUS has a license to 
produce 100 watts (0.13 hp) or a neutron flux of ~2.5 × 109 cm-2s-1 at 
the core's center.
https://en.wikipedia.org/wiki/CROCUS