Experiments to Control Atom Number and Phase-Space Density in ...

BGauss
0.4 0.3 0.2 0.1 0.1 zm
Figure 7.11: Simulation of the Zeeman slower magnetic field profile. The black line
shows the ideal magnetic field for decelerating atoms in the Zeeman slower. The green
line shows the field of each of the eight individual Zeeman slower coils, the red line shows
the field due to the MOT coils. Together the Zeeman slower coils and the MOT coils
lead to the blue line. The origin is at the center of the MOT.
temperatures of up to 200 ◦ C. Including the coating, the outer dimensions of the wire
are 1.45 mm×1.45 mm. A layer of epoxy (Epoxy Technology, 360) is applied after each
individual layer of the coil is wound to ensure mechanical stability and durability of
the coils. Once the coil is finished, the epoxy is allowed to dry at room temperature
over night. Subsequently the coils are baked at 100 ◦ C for one hour to cure the epoxy
completely. The finished coils are then assembled onto a tube and mounted around the
differential pumping tube.
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200
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The length of the Zeeman slower is 312 mm and the total distance from the
start of the Zeeman slower to the center of the MOT is 414.7 mm. Each coil has 26
turns axially and between 5 and 19 layers radially. The inner radius of the coils is
15.5 mm. The Zeeman slower has a resistance of approximately 3.5 Ω, leading to a
power dissipation of roughly 120 W. The individual parameters of each coil are listed
in table 7.1.
Before attaching the Zeeman slower to the vacuum chamber, the magnetic field
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