Germanium Working Group (H.J. Wollersheim)

	Ge-Detector Working Group contact: John Simpson Frank Becker

:	Documents:
	Design paper for the Ge-array (October 2002) HECTOR in RISING RISING with Miniball Design Status (19.1.2004) RISING with Miniball Design Status (28.7.2004) RISING stopped beam set-up 29.09.05

	LN₂ automatic filling system:
	Introduction (German) LN₂ automatic filling system Positions of Cluster Detectors in the Array Filling Status High Voltage Status for Clusters

	Photos and Technical Drawings:
	Photo Sampler Technical Drawings

	Atomic Background Radiation:
	Bremsstrahlung (pdf version) ¹³²Sn on ²⁰⁸Pb versus energy 100 MeV/u ¹³²Sn on C,Sn,Pb target 100 MeV/u ²³⁸U on ²⁰⁸Pb

	g-absorber: (suppression of atomic background radiation)
	Pb(1mm),Sn( ) absorbers in front of Ge-detectors Pb(2mm),Sn( ) absorbers in front of Ge-detectors

Doppler Effect:

Through Einstein's Eyes
relativistic aberration Doppler effect headlight effect

Doppler shift (pdf version)
Beam velocity b and g-parameter

Doppler broadening (DJ_g)
Doppler broadening (Db)
         for very short lived states:
         g-ray energy resolution (FWHM): 1%
         for target thickness of 0.1 g/cm² for ¹³²Sn on ²⁰⁸Pb
proposed experimental EUROBALL set-up
         g-ray energy resolution (FWHM): 1%
         total g-ray efficiency: 1.67%
         g-ray energy resolution (FWHM): 1.24%
         total g-ray efficiency: 2.88%
         2^nd and 3^rd Cluster ring at ~70 cm

	Particle-g-Ray Angular Correlation:
	particle-g-ray angular correlation (rest system) transformation of g-emission angle (rest -> lab-system) particle-g-ray angular correlation (lab system) particle-g-ray angular correlation (exp. set-up) particle-g-ray angular correlation (²⁰Ne + ¹⁰⁸Ag, 5.6 MeV/u) particle-g-ray angular correlation (⁷⁸Kr + ¹⁵⁸Gd, 33.MeV/u)

	Literature
	Achievements with EUROBALL 1997-2003 D.W. Weisshaar: MINIBALL ein neuartiges Gamma-Spektrometer C. Gund: Das sechsfach segemtierte MINIBALL Modul AGATA technical proposal

last update: 10.1.2006 Hans-Juergen Wollersheim HJW