cea dsm dapnia dirac-phase-1 annual report meeting status of the r3b-glad magnet dirac-phase-1...
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CEA DSM Dapnia
DIRAC-Phase-1 Annual Report meeting
Status of theR3B-GLAD Magnet
DIRAC-Phase-1
Annual Report Meeting26 September 2006
Bernard Gastineau
CEA DSM DAPNIA
- Bernard GASTINEAU - R3B-GLAD Magnet - DIRAC-Phase-1 Annual Report meetingCEA DSM Dapnia26 September 2006 2
DIRAC-Phase-1 Annual Report meeting
Superconducting coils
Main coil
Lateral coil
- Bernard GASTINEAU - R3B-GLAD Magnet - DIRAC-Phase-1 Annual Report meetingCEA DSM Dapnia26 September 2006 3
DIRAC-Phase-1 Annual Report meeting
2006 – First Year main points
•Preliminary Interface meeting with GSI-FAIR – 27 March •Magnet Protection study and Instrumentation – March & April•Preliminary Superconducting cable specification – April•Mechanical studies – beginning in February
– Cold mass – behaviour with magnetic forces – Cryostat mechanical studies – behaviour with pressure forces
•Magnetic design optimisation (peakfield)•Superconducting cable specification – May-June
•Technical Design Review 1 (Conductor validation) – 4 July•Check of the Large Acceptance of the present cryostat design – September
•Superconducting cable Order - (October)
- Bernard GASTINEAU - R3B-GLAD Magnet - DIRAC-Phase-1 Annual Report meetingCEA DSM Dapnia26 September 2006 4
DIRAC-Phase-1 Annual Report meeting
Check of the Large Acceptance (September 2006):
In order to get the acceptance of the magnet, we have to respect several geometrical conditions difficult to put together :
-A beam size of +/- 80 mrad horizontally and vertically from the target,
-transparency to Neutrons & to 1 GeV Proton trajectories in a 2.4 T field,
-a free space of 1 meter around the target, for detectors,
-A vacuum connection between the beam pipe and the cryostat,
-Thermal screen and thick inner vacuum vessel to resist to the pressure,
-And thick cold casing around the coils to maintain the magnetic forces.
The geometrical optimisation has given the following new parameters:
-Distance from the Target to the magnetic entrance face = 1.450 m,
-A fixed horizontal angle of beam incidence / magnet axis = 14 degrees,
-vertical and horizontal angles of the main and lateral coils = 5° and 18.6°,
And we have to verify that the fringe field is < 20 mT around the target.
- Bernard GASTINEAU - R3B-GLAD Magnet - DIRAC-Phase-1 Annual Report meetingCEA DSM Dapnia26 September 2006 5
DIRAC-Phase-1 Annual Report meeting
2006/2007 – Next Year Main Tasks
•Magnetic design optimisation - October– Mechanical sensitivity study & Optical resolution optimisation
•Interface Definition meeting with GSI-FAIR - (October) •Cold Mass mechanical studies
– Cold Casing : further coil pre-stress study – 2006 Q4
– Detailed winding & Integration study - 2007 Q1-Q2•Technical Design Review 2 (Industrial specification) - January 2007 •Superconducting cable delivery and test – (March & Q4 2007)•Cold Casing Order - 2007 Q1 & Q2•Winding & Integration 1 Order – 2007 Q3
- Bernard GASTINEAU - R3B-GLAD Magnet - DIRAC-Phase-1 Annual Report meetingCEA DSM Dapnia26 September 2006 6
DIRAC-Phase-1 Annual Report meeting
CEA DSM Dapnia
DIRAC-Phase-1 Annual Report meeting