Currently this magnet and the test stand are dismantled and not in use.
For measurements in magnetic fields, the former ZEUS compensator magnet is available at DESY. After its dismantling at the ZEUS experiment it has been re-commissioned in the HERA cryogenics hall (building 54). It is a superconducting magnet which is capable of producing fields up to 5 T.
The inner diameter is approximately 28 cm and the length of the coil is around 110 cm. To ensure superconductivity, the coil is kept at 4 K by liquid helium surrounded by a shield of liquid nitrogen, therefore it cannot be moved to the test beam area. Instead we are planning to build up a laser system.
Pictures
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From left to right:
a) Rear view of the 5 T magnet in the cryogenics hall (March 2002)
b) The magnet positioned in place (March 2002)
c) The new hut next to the magnet (October 2002, by Sven Lotze)
d) The magnet inside the safety fence, ready for operation
Further Information
- Sketch of the magnet construction (gzipped PostScript)
- Ground plan of the magnet area (PDF)
- Description of the cryogenics system for the magnet (PDF)
- Sketch of the safety system for protection of the magnet (PDF)
- Details about the magnetic field, simulations and measurements
- Simulation of the field map (GIF, also available as EPS)
- The Compensating Solenoid in the ZEUS Bluebook
Available Infrastructure
- Hut (5.0 × 3.9 m²)
- Phones (stationary and mobile)
- Ethernet connections
- Three electronics racks
- Safe for radioactive sources
- Gas supply system
- Power connections (220 V and 380 V)
- Linux computers
- Ten high voltage cables (up to 6 kV)
- NdYAG laser (260 nm) on demand
- Cosmics trigger system (contribution from Aachen)
