GSI Helmholtzzentrum für Schwerionenforschung GmbH
GSI – recent research highlights
and a few strategical remarks
NuPECC meeting, Caen, October 9, 2015
GSI Helmholtzzentrum für Schwerionenforschung GmbH
Radiation Detected Resonance Ionization
Laser Spectroscopy of 254No at SHIP
Measurement of:
atomic levels,
ionization potential
hyperfine structure
isotopic shifts
Study of:
relativistic effects
for Z>100
nuclear moments
& spins
changes in mean
square charge radii
254No
 First ever laser spectroscopy beyond Fm
 Incoming rate of 254No: ≈ 5 atoms/s / overall efficiency for 254No: ≈ 10%
GSI Helmholtzzentrum für Schwerionenforschung GmbH
Verbundforschung
SHE-Physik / M. Block, M. Laatiaoui et al.
Currently running at
(SHE Chemistry):
GSI Helmholtzzentrum
für SchwerionenforschungVerbundGmbH
Measuring Chemical Properties of Flerovium
(Z=114)
forschung
Status in the published literature:
2010 (PSI/Dubna): Three atoms
observed
 noble gas-like behavior
inferred
2014 (TUM/GSI): Two atoms observed
 noble metallic behavior
inferred
New TASCA Run, aiming at 12
atoms to solve the puzzle:
Run 1 (Fall 2014)
Duration:
12 days
Beam dose:
~2.8·1018
2 decay chains from Fl / Cn
observed
(under final evaluation)
A. Yakushev (Spokesperson) and L. Lens
with experimental setup in TASCA cave X8
GSI Helmholtzzentrum für Schwerionenforschung GmbH
Run 2 (Aug.-Oct. 2015),
current prelim. status
Duration (main beam) ~10 days
18
GSI Helmholtzzentrum für Schwerionenforschung GmbH
Workshop on the design
of the FAIR tunnel T110
Introduction and Goals of the Workshop
GSI Helmholtzzentrum für Schwerionenforschung GmbH
The outside view on the tunnel T110
Tunnel T110
Outer Diameter: ca. 350 m
Circumference (acc): 1083 m
Base: 16 to 18 m
under ground
10.05 m
1.0m
~4.6m
1.5m
1.2m
1.5m
Question:
Is the tunnel T110
reasonable or
overdesigned?
16.15 m
7m
1.5m
Beam Pipe
Workshop
on the design offür
theSchwerionenforschung
FAIR tunnel T110 , September
GSI Helmholtzzentrum
GmbH 9 / 10, 2015
Width: 33.2 m, Height: 8.6 m
Ursula Weyrich
5
GSI Helmholtzzentrum für Schwerionenforschung GmbH
Findings and Observations
• high quality and motivated project team
• presentations made by the project team were comprehensive and
informative
• the project team responded well to the questions raised during the
workshop
• given the demanding constraints (accelerator requirements, radiation
protection issues, environmental obligations), the present design is a
feasible solution and can be implemented
• potential cost savings for redesign of the tunnel as presented by the
planning team as well as by the review committee indicating no
significant cost savings, at this stage, do not appear to be justified
considering the potential lengthy planning delays and the exclusion of
future options at a later point in time.
GSI Helmholtzzentrum für Schwerionenforschung GmbH