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Cosmology Seminar: Brad Holden (UC Santa Cruz)
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HEPL-KIPAC Seminar: Daniel Hagedorn and Frank Löffler
| What | HEPL seminar |
|---|---|
| When |
05 May 08 from 04:00 pm to 05:30 pm |
| Where | Physics/Astrophysics Building, Conference Rooms 102 & 103 |
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Manufacturing Test Masses for the Evaluation of the Equivalence Principle
Abstract:
The performance of experimental investigations into the principle of equivalence, e. g. the Drop Tower Experiment in Bremen, Germany, or the orbit based Microscope and STEP experiments, requires test masses of the highest precision with respect to homogeneity, form and dimensions. The technical demands resulting from theoretical considerations require a state of the art raw material production, fabrication of the functional surfaces and coating technology. New courses of fabrication have to be developed or optimized for these special tasks. The metrology to be applied after each production step is of particular importance for compliance with the requirements.
The Physikalisch-Technische Bundesanstalt (PTB), situated in Braunschweig and Berlin, Germany, is the German National Metrology Institute (NMI). Hence, PTB’s Scientific Instrumentation Department has the great advantage to be able to verify new and self-developed machine-base in-situ measuring techniques by means of national primary standards, e.g. length, form and dimension, mass, density or thermal expansion to name but a few, allowing an unrivalled precision.
Biography:
Frank Löffler
Diplom in Mechanical Engineering, Dr.-Ing. in Thin Film Technology, Habilitation in Risk Assessment of New Technologies and apl. Prof. in Environmental Aspects in Material Science at RWTH Aachen University. Scientific employee (1986 – 1990) and Chief engineer (1990 – 1995) at RWTH Material Science Institute. Scientific employee (1995 – 1998) and head of the department Scientific Instrumentation (since 1998) at PTB the National Metrology Institute.
Daniel Hagedorn
Graduated Physicist; Dr. rer. nat. in Semiconductor and Quantum Physics (major), Microsystem Technology and Astrophysics (minor);
Thesis: Fabrication and Measuring of Superconducting Digital Electronic Circuits;
Scientific employee at PTB’s Quantum Electronics Department (1999-2006) and Scientific Instrumentation Department (since 2006);
Head of the Surface Technology Working Group (since 2008).
Location: Physics/Astrophysics Building, Conference Rooms 102 & 103
Monday, May 5, 2008, 4:00 – 5:30 pm
Light refreshments available 4pm; Presentation begins 4:15pm. Open to all.
MASS: Doug Applegate