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11. Determination of the water absorbed dose in neutron beams and ion beams with ionization chambers and a transportable water calorimeter  
Date: 10.05.2006
Percental score: 5 %
A transportable and compact water calorimeter was used in hospitals and research institutes which use different types of particle beams for cancer therapy: in a collimated neutron beam (Clinical  
12. Measurement of the perturbation effect correction factors pCo for flat chambers  
Date: 10.05.2006
Percental score: 8 %
For a large number of flat chambers of types Roos, Markus and Advanced Markus, the perturbation correction factors pCo were determined. As the result of these investigations, the new version  
13. Determination of the angular distribution of backscattered particles at the ion accumulation experiment  
Date: 26.09.2006
Percental score: 7 %
A monitor was developed for the measurement of sputtered and reflected particles to determine the mass contribution of particles which are backscattered through the entry hole of the collector at  
14. Operation of the ion accelerators by Department 6.4  
Date: 15.01.2007
Percental score: 6 %
The department operates two ion accelerators: a Van-de-Graaff linear accelerator and a compact cyclotron. In the period from October 1, 2005 to September 30, 2006, the two accelerators were used for  
15. Uncertainty budget for the dose range between 2 Gy and 25 Gy established  
Date: 15.01.2007
Percental score: 5 %
The uncertainty budget for the secondary standard measurement system for the dose to water based on alanine/ESR was established. The relative standard measurement uncertainty is 0.15% for 25 Gy,  
16. Differences in the sound reduction in test facilities and in buildings  
Date: 15.03.2007
Percental score: 7 %
It was shown by scaled model measurements that in test facilities, homogeneous building elements have a larger sound reduction than in real buildings. This is a broadband effect which decreases  
17. Building Acoustics en miniature  
Date: 14.05.2007
Percental score: 5 %
Problems in building acoustics can be investigated excellently on small, downscaled models. They are more flexible, require less time and effort and are cheaper than the usual measurements carried  
18. Optimisation of the Ion Beam-Apparatus to Maximal Transmission  
Date: 25.06.2007
Percental score: 5 %
At the ion accumulation experiment the mass of accumulated ions and thereby the measurement uncertainty is governed by the value of the ion current at the collector. In order to achieve the maximal  
19. A Prize for PTB Nanometrologist  
Date: 16.07.2007
Percental score: 7 %
Thorsten Dziomba, a young PTB scientist, has been awarded the title "The Best Young Metrologist of COOMET". His presentation convinced the high-ranking committee, among them the  
20. Calibration of force vector transducers with smallest uncertainties  
Date: 17.07.2007
Percental score: 6 %
With the precision force transducers used so far, the force is measured in an axis predefined by the transducer construction. In the last few years, however, the demand for force transducers  
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