Radiation safety survey on a flattening filter-free medical accelerator (2007)
Vassiliev, O. N., Titt, U., Kry, S. F., Mohan, R., Gillin, M. T.
Dose rates at several locations outside a treatment room were measured for 6 and 18 MV photon beams from a Varian Clinac 21EX accelerator operated with and without a flattening filter. Also, dose...
Proton therapy facilities are shielded to limit the amount of secondary radiation to which patients, occupational workers and members of the general public are exposed. The most commonly applied...
Neutron radiation area monitoring system for proton therapy facilities (2005)
Newhauser, W. D., Ding, X., Giragosian, D., Nill, S., Titt, U.
A neutron radiation area monitoring system has been developed for proton accelerator facilities dedicated to cancer therapy. The system comprises commercial measurement equipment, computer hardware...
Patient neutron dose equivalent exposures outside of the proton therapy treatment field (2005)
Polf, J. C., Newhauser, W. D., Titt, U.
A large fraction of dose to healthy tissue located outside of the treatment field during proton therapy is attributable to neutrons produced in the beam-delivery apparatus. In this work, the neutron...
Bues, M., Newhauser, W. D., Titt, U., Smith, A. R.
In step and shoot spot-scanning, a small-diameter proton beam is magnetically swept and varied in energy in order to cover the tumour. Initial estimates of the beam size indicate that additional...
Design tools for proton therapy nozzles based on the double-scattering foil technique (2005)
Fontenot, J. D., Newhauser, W. D., Titt, U.
Proton therapy has been increasing over the past several years, with several new treatment facilities being built in Europe, Japan and the United States. In this work, analytical and Monte Carlo...
A time projection chamber with optical readout for charged particle track structure imaging (2004)
Titt, U., Breskin, A., Chechik, R., Dangendorf, V., Schmidt-Boecking, H., Schuhmacher, H.
We report about a nuclear track imaging system which is designed to study in detail the ionization topology of charged particle tracks in a low-pressure gas. The detection method is based on a time...
Titt, U., Dangendorf, V., Schuhmacher, H.
We describe first results obtained with a track structure imaging system for measuring the ionisation topology of charged particles in a low-pressure gas. The detection method is based on a time...
Imaging of microscopic features of charged-particle tracks in a low-pressure gas (2004)
Dangendorf, V., Schuhmacher, H., Titt, U., Tittelmeier, K.
An imaging system for measuring the spatial distribtion of charged particle tracks in a low-pressure gas is presented. The method is based on an optically read out time projection chamber. Results of...
Titt, U., Dangendorf, V., Grosswendt, B., Schuhmacher, H.
An imaging system for measuring the track structure of charged particles in a low-pressure gas is presented. We describe the experimental method and compare experimental results with first results of...
Imaging of Microscopic Features of Charged Particle Tracks in a Low-pressure Gas (2002)
Dangendorf, V., Schuhmacher, H., Titt, U., Tittelmeier, K.
An imaging system for measuring the spatial distribution of charged particle tracks in a low-pressure gas is presented. The method is based on an optically read out time projection chamber. Results...
Concept of a Neutron Dosemeter Based on a Recoil Particle Track Chamber (1997)
Titt, U., Breskin, A., Chechik, R., Dangendorf, V., Grosswendt, B., Schuhmacher, H.
A new experimental approach for a neutron dosemeter and spectrometer is presented. It is based on an optically read out time projection chamber (TPC). Charged particles entering a low-pressure...