1. GSI – recent research highlights and a few strategical remarks
NuPECC meeting, Caen, October 9, 2015

2. 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%
Verbund-forschung
SHE-Physik / M. Block, M. Laatiaoui et al.

3. Currently running at (SHE Chemistry):
Measuring Chemical Properties of Flerovium (Z=114)
Verbund-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)
Run 2 (Aug.-Oct. 2015),
current prelim. status
Duration (main beam) ~10 days
Beam dose: ~3·1018
4 decay chains from Fl / Cn observed
(under evaluation)
Continuation: 3 more weeks in Oct. 2015
A. Yakushev (Spokesperson) and L. Lens with experimental setup in TASCA cave X8

4. Workshop on the design of the FAIR tunnel T110 Introduction and Goals of the Workshop

5. The outside view on the tunnel T110
Outer Diameter: ca. 350 m
Circumference (acc): 1083 m
Base: 16 to 18 m
under ground
10.05 m
7 m
16.15 m
1.5m
Question:
Is the tunnel T110
reasonable or
overdesigned?
~4.6m
1.5m
1.2m
1.0m
1.5m
Beam Pipe
Width: 33.2 m, Height: 8.6 m
Workshop on the design of the FAIR tunnel T110 , September 9 / 10, 2015
Ursula Weyrich

6. 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.