Mechanical integration of PANGEA Marcell Steinen Helmholtz-Institut Mainz Panda Coll. Meeting 18/1, GSI, 03/06/17
PANGEA – PAnda GErmanium Array ● 20 individual detectors, 3 crystals each ● Electro-mech. Cooling (~LN2 temperatures) ● Fully integrated design ● Very rough conditions for Ge detectors BG suppression Crystals Cold head/ DCS Cooler 12 cm Support electronics 3 x HV/Preamp Marcell Steinen 2/9
Floating detectors ... - 5 columns - 3 z positions beam - ~ 500 kg Marcell Steinen 3/9
Backward Endcap EMC - rails for mounting - long lever - counterweights on the platform Marcell Steinen 4/9
Holding Frame - same rails as BW EMC - multiple segmented plates In coll. with Ferchau Engineering - Stainless steel and aluminium - individual parts electrically isolated - tripping of solenoid uncritical Marcell Steinen 5/9
Sub-modules Beam pipe hole: d = 95 mm No MVD in this setup - 5 sub-modules for easy mounting / maintenance - each sub-module accessible via crane / lifting device Marcell Steinen 6/9
Mounted Detectors Sub-modules screwed to holding plates via rods Marcell Steinen 7/9
Mounted Detectors Additional connectors on the outside Marcell Steinen 8/9
PANGEA inside the PANDA barrel Space for cabling of the target system beam Marcell Steinen 9/9
Backup slides Backup slides Marcell Steinen 10/9
Production of hypernuclei at PANDA < 1 MeV < 10 MeV Energy of γ and pions depends on the ΛΛ binding energy Marcell Steinen 11/9
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