Chemical Vapor Deposited (CVD) diamond has great advantages for use as thermoluminescent dosimeters in radiotherapy environment because of the reproducible high quality and controlled doping. This study compares CVD diamond Thermally Stimulated Luminescence response to that of a classical ionization chamber. Clinicallyrelevant features like the depth-dose distributions as well as the absorbed d...

PURPOSE With the aim of improving the results of treatment for esophageal carcinoma, we have investigated the efficacy and toxicity associated with the use of a 250-MeV proton beam for radical radiation therapy in esophageal carcinoma. EXPERIMENTAL DESIGN Thirty patients with esophageal carcinoma (superficial, n = 13; advanced, n = 17) had been treated with proton beam therapy alone or with p...

The present thesis is focused on the development and application of narrow scanned high energy photon beams for radiation therapy. The introduction of physically and biologically optimized intensity modulated radiation therapy (IMRT) requires a flexible and accurate dose delivery method to maximize the treatment outcome. Narrow scanned photon beams is a fast option for IMRT since it is not depe...

Introduction: In radiation therapy, the accuracy of dose calculations by a treatment planning system (TPS) is important to achieve tumor control and to spare normal tissue. Treatment planning system calculations in the heterogeneous situation may present significant inaccuracies. In this study, three different dose calculation algorithms, pencil beam (PB), collapsed cone (CC), ...

Superconducting circuits provide an attractive architecture for quantum optics experiments in solid state systems. Microwave radiation interacts strongly with individual (macroscopic) quantum systems, and enables to realize emitters of single photons. The statistical property of emitting exactly a single photon as information carrier makes these emitters relevant for quantum communication and i...

We propose a positron source for future linear colliders which uses the mechanism of coherent pair creation process from the collision of a high energy electron beam and a monochromatic photon beam. We show that there is a sharp spike in the pair-produced positron energy spectrum at an energy much lower than the primary beam energy. The transverse emittance is "damped", yielding final positrons...