Browsing by Author "Dafni, Theopisti"
Now showing items 1-9 of 9
-
CAST: Status and latest results
Dafni, Theopisti; Aune, Stephan; Barth, Kurt L.; Borghi, Silvia; Brauninger, Heinrich W.; Cantatore, G.; Carmona, J. M.; Çetin, Serkant Ali (Hamburg Verlag, 2011)In July 2011 CAST finished the data-taking of its nominal programme having scanned axion masses up to ∼ 1.18 eV/c2. Here we present the first results of the data taken in 2008 first year of the last data-taking campaign ... -
Low background x-ray detection with micromegas for axion research
Andriamonje, Samuel; Castel, J.F.; Dafni, Theopisti; Davenport, M.; Fanourakis, George; Ferrer-Ribas, Esther; Yıldız, Süleyman Cenk (IOP Publishing, 2014-01)Axion helioscopes aim at the detection of solar axions through their conversion into x-rays in laboratory magnetic fields. The use of low background x-ray detectors is an essential component contributing to the sensitivity ... -
A new micromegas line for the CAST experiment
Andriamonje, Samuel; Aune, Stephan; Braeuninger, Heinrich; Dafni, Theopisti; Doğan, Berkol; Fanourakis, George (Elsevier, 2007-10-21)A low background Micromegas detector has been operating on the Cern Axion Solar Telescope (CAST) experiment at CERN for the search of solar axions during the first phase of the experiment. The detector operated efficiently ... -
The new micromegas X-ray detectors in CAST
Tomas, Antonio; Aune, Stephan; Dafni, Theopisti; Fanourakis, George K.; Ferrer-Ribas, Esther; Yıldız, Süleyman Cenk (John Wiley&Sons, 2011-07)The last generation of micromegas, called microbulk, are ahead of classical gas detectors (or even other kind of micro-pattern gas detectors) in gain stability, efficiency (by operation at high pressure), simplicity, ... -
Performance of micromegas detectors in the CAST Experiment
Yıldız, Şükrü C.; Aune, Stephan; Dafni, Theopisti; Davenport, M.; Fanourakis, George K.; Ferrer-Ribas, Esther (IOP Publishing, 2012)CERN Axion Solar Telescope (CAST) experiment is searching for axions coming from the Sun. Inside transverse magnetic fields, axions can be converted into X-rays, which can be detected by X-ray detectors. The expected energy ... -
Rare event searches based on micromegas detectors: The T-REX project
Dafni, Theopisti; Aune, Stephan; Fanourakis, George K.; Ferrer-Ribas, Esther; Galan, J.; Garcia, J.A.; Yıldız, Süleyman Cenk (IOP Publishing, 2012)Micromegas readouts are an attractive option for many of the rare event searches, due to their performance regarding energy resolution, gain stability, homogeneity and material budget. The T-REX project aims at developing ... -
The T-REX projec t: Micromegas for rare event searches
Dafni, Theopisti; Aune, Stephan; Fanourakis, George K.; Ferrer-Ribas, Esther; Yıldız, Şükrü C. (IOP Publishing, 2012)The T-REX project aims at developing novel readout techniques for Time Projection Chambers for experiments searching for Rare Events. The Micromegas detectors are a good option, because of their good performance regarding ... -
Ultralow background periods in CAST Micromegas detectors and tests in the Canfranc underground laboratory
Iguaz, F. J.; Dafni, Theopisti; Ferrer-Ribas, Esther; Galan, Javier; García, Ana I. M.; Gardikiotis, Antonios; Yıldız, Süleyman Cenk (IOP Publishing, 2011)Micromegas detectors have shown a low and stable background level in the CAST experiment due to their low radioactive materials, good energy resolution and spatial resolution. Since 2008, four ultralow background periods ... -
X-ray detection with Micromegas with background levels below 10-6keV-1cm-2s-1
Aune, Stephan; Aznar, Francisco; Calvet, David; Dafni, Theopisti; Diago, A.; Druillole, Frederic; Yıldız, Süleyman Cenk (IOP Publishing, 2013-12)Micromegas detectors are an optimum technological choice for the detection of low energy x-rays. The low background techniques applied to these detectors yielded remarkable background reductions over the years, being the ...
