New Graduate Research Projects

Nuclear First DTC Mini Project (3 or 6 months)

 

Development of New STEFF Stop Detector

This involves development work on the new SED stop detector for STEFF at NFS. The proposal is to use the induced signals on neighbouring anodes to determine the position of the electron interaction to better than the size of one anode. The prototype SED detector will be used in the Schuster Laboratory. Testing will be carried out by collimated beams of alphas and electrons.

Availability: 2013

Simulation and prototyping of a large-area Scintillation SED

Current SED detectors in use with STEFF use either multi-channel plates or multi-wire gas detectors for secondary-electron detection. In scanning election microscopes electrons are often detected using scintillators. This project is a feasibility study, with testing in the lab resulting in a prototype of a scintillation SED. A range of possible large area scintillation detectors with associated light-pipes and phototubes will be considered.

Availability: 2013

Monte-Carlo Simulation of Fold and Energy Distributions

When a gamma-ray burst from a fission-fragment is detected in the STEFF array of NaI scintillators the many possible interactions with the detectors and the supporting structure give rise to detected fold and detected energy that are not generally the same as the original multiplicity and gamma energy. This project uses Monte Carlo simulations with GEANT4 to examine the mapping in 2D between the two spaces with a view to improving the transformation of STEFF data. This has an application in the use of STEFF data to better understand reactor heating due to gamma interactions.

Availability: 2013

 

Phd Projects

 

Electromagnetic Properties of Fission Fragments

Using detailed measurements of perturbed angular correlations between gamma rays it is possible to extract both g-factors and M1/E2 mixing ratios. This project uses the GAMMASPHERE array to perform such measurements in fission fragments. In parallel with this work the student will develop apparatus for the measurement of lifetimes of very short-lived excited states.The combination of lifetimes and g factors gives valuable information on both the shape of the nucleus and the single-particle configuaration.

Availability: Available Sept 2013