The thesis is focused on summarizing the current issue of work with experimental lasers in the research center of Prague Asterix Laser System (PALS), which falls under the Institute of Physics and Institute of Plasma Physics. Experimental lasers used for experimental research in the field of powerful laser physics and laser-produced plasma. The main experimental facility PALS is a powerful pulsed laser system Asterix IV., The research center was purchased from the German Max Planck Institute for quadratic Optics in Garching near Munich for a symbolic 1 mark. Asterix is one of the three largest iodine lasers in Europe. Between the research programs being carried out on the experimental development of lasers include applications of plasma point sources of soft non-coherent radiation, development and application of laser plasma X-ray etc. Other facilities located in the research center include PALS laser system Ti - Sapphire power of 25 terawatts. In this system, a similar experiment was performed measuring photon film dosimeters. The experimental laser Asterix IV in the research center PALS have been no experiment with film or electronic dosimeters. This work deals with the possibility of using electronic personal dosimeters when working with lasers and detection sensitivity of the dosimeters, unlike other types of personal dosimeters. This was achieved by measuring the two independent measurements ongoing at the Asterix IV laser system. Possibilities of using electronic personal dosimeters for measuring the pulse field, even though they are designed to measure benefits only in the continuous field is particularly important for workers newly built ELI center in Prague. Center ELI will be the most modern laser equipment in the world. In it will be carried out the research and application projects involving the interaction of light with matter in intensity, which is about 10 times larger than the currently achievable. ELI will deliver ultrashort laser pulses lasting typically a few femtoseconds (10-15 fs) and produce power up to 10 PW. The ELI Center will be unlike PALS controlled area in which it is important to monitor external radiation workers. Therefore, the thesis is aimed at providing support for PALS measurement using electronic personal dosimeters Center ELI. We also compare the sensitivity of the most common types of personal dosimeters such as film and thermoluminescent dosimeters. In the theoretical part of the description and principle of laser Asterix IV. Furthermore, the definition of ionizing radiation and its species with a particular focus on gamma and X-rays. In this thesis remains missing definitions such as dosimetry, types of dosimeters, monitoring, radiation protection and value to it. In the methodology are then analyzed measurements that were carried out in two experiments using electronic personal dosimeters, film dosimeters and thermoluminescent dosimeters. Furthermore, also the deployment of the laser system, focusing mainly on the description of the interaction of the hall and the interaction chamber, where were measured. The methodology is also a series of photos of photos taken at the workplace PALS for easier orientation. In the results, the values of individual measurements recorded for better clarity in the tables and charts described. The discussion is focused on the confirmation of hypotheses. Are compared to results from electronic and film dosimeters and electronic dosimeters and termoluminescent. Results are based on one shot and statistically processed. In the event of a general summary of the work, it is recommended the use of electronic personal dosimeters to work with experimental lasers and supported the intention of the use of electronic personal dosimeters in the newly built Center ELI in Prague, mainly because of higher sensitivity than that with film and TLD and also for easier, faster, and economical evaluation of the benefits.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:175392 |
| Date | January 2014 |
| Creators | ŽIDKOVÁ, Jana |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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