Date: May 19 - 23, 2014

Training course on project management and entrepreneurship at CERN.

Date: Sept. 29 - Oct. 03, 2014

In the 3rd ARDENT meeting I met the other ESRs again, reported my achievements during the past year and attended a workshop on Quality Assurance in Radiation Therapy.

Venue: Port Douglas, Queensland, AUSTRALIA

Date: October 20 - 23

I attended the MMND biennual workshop on detectors for Micro-, Mini- and Nanodosimetry in hadron therapy and in space, which took place in Port Douglas. The workshop was chaired by Anatoly Rozenfeld. It was well organized with very good and interesting presentations. The first day was dedicated to detectors especially in Quality Assurance in Hadron and Microbeam Radiation Therapy (MRT). On the second day the focus was on Micro- and Nanodosimetry. On the third day, GEANT4 simulations were addresed and a session dedicated to the ARDENT project was held, where some of the ESR presented their work. Moreover, lectures to dosimetry and radiation in space were given by a medical doctor and physists.

Venue: Seattle, USA

Date: November 8 - 15

I attended the 2014 IEEE Nuclear Science Symposium and Medical Image Conference -21st Symposium on room-temperature semiconductor X-ray and gamma ray detectors- and presented the contribution "Track Analysis Techniques and Lineal Energy Transfer Measurements by Means of a Timepix Detector“ in the “Semiconductors Tracking and Spectroscopy“ poster session of the event. This poster showed some of the results from evaulation of proton and heavier ion measurements within the ULICE beam time in Heidelberg in February 2014.

Date: April 25, 2014

Czech Metrological Insitute in Prague: Measurement of the responses of the hodoscopes that are going to be installed in the ATLAS detector to slow and fast neutrons.

Date: December 4 - 7

Los Alamos Neutron Science Center: Timepix detectors were irradiated with neutrons up to 600 MeV at the FP30R of the Weapons Neutron Research facility of the Los Alamos Neutron Science Center. The detector responses will be assigned by using the Time-of-Flight technique. Measurements were peformed for the ATLAS-TPX device, which was rotated within the beam in steps of 30°, a Timepix detector with a 1 mm thick sensor layer and two TPX3 detectors with 300 µm thick sensors. The ATLAS-TPX and the Timepix were also set to the ToT mode.

Furthermore, CR39 tracking foils were placed at the positions of the TPX devices at different angles in the beam. Their responses will be compared to the detector responses of the Timepix devices.

Here is an example event measured by the TPX3, showing deposited energy and the time:

Venue: Casta-Papiernicka, SLOVAKIA

Date: April 26 - May 1, 2015

I attended the SWG 2015, i.e. Spring Workshop of GEANT4 organized by the ISOLDE collaboration. I have gained a first impression of the simulation framework on my secondment at ESA. Now I was able to get a deeper understanding of the simulation package. I have learned how to set up and install the GEANT4 packages on Linux and how to build own applications. The lectures were accompanied by tutorials and hands on examples. Beside learning the basic things about GEANT4, I have also gotten in touch with some developers of GEANT4, who can be adressed in case there are questions concerning my own GEANT4 application.

Most important! I found out how to make nice pictures:

Venue: Bruges, BELGIUM

Date: April 19 - 24, 2015

Description: I was at the International Conference on Individual Monitoring of Ionising Radiation (IM 2015). This conference was focussed on dose assessment internally and externally. However, the conference covered a broad range of applications and topics: Existing guidelines and changes in ISO standards, new developments in detector technologie and simulations, the monitoring of radiation workers in industry, inside hospitals and in research, possible alternative radiation detection techniques in case of nuclear incident (reactor blow up, etc.) the dose distributions in the treatment rooms in radiation therapy were adressed.

Venue: Budva, MONTENEGRO

Date: June 8 - 13, 2015

Description: I attended the RAD 2015 conference where I gave a presentation with the title "Study of neutron interactions in silicon by Timepix detectors" in the neutron and space radiation section. The conference covered a huge range of topics from radiation damage in silicon devices to radiobiology.

The social event was a boat trip in the beautiful Kotor bay. Here are some impressions:

Date: March 10 - 15, 2015

My colleague Ivan Caicedo and I were invited to perform measurements with Timepix devices at an C-12 ion beam of 1 GeV/A at the Nuclotron of JINR in Dubna. We have irradiated a telescope of 3 Timepix detectors opening their frames simultaneously and 2 Timepix3 of different thicknesses. Impressions and tracks measured with Timepix3:

Date: March 31 - April 09, 2015

The second part of the beam time reserved for Proba-V. We exposed Timepix and Timepix 3 detectors to argon ions of 75 GeV/A at the H8 beam line at SPS in CERN. A 4 cm thick polyethylene target was inserted to create a mixed radiation field. It will be tested, whether the different ion species produced by the target can be separated by the track shape, by the dE/dx information of by analyzing the delta electron component.

A track from the measurement of perpendicular particle impact (measured by a 1 mm thick TPX at a bias of 400V) and the beam profile (the centre of the tracks is filled into a 2D histogram):

Slices of the beam profile (ROOT can be fun):

More measured events: A track measured at an angle of 70 degree with respect to the sensor normal and an observed spallation event.

Easter Sunday lunch break up on Mont Saleve:

Date: May 16 - 24, 2015

Together with our colleagues from the University of Montreal we performed measurements at the Van-de-Graaff accelerator with protons of energies up to 11.4 MeV. We were using Timepix detector with CdTe, GaAs and silicon sensor layers of thicknesses 1 mm, 0.9 mm and 1 mm, respectively. Moreover, a Timpeix 3 device with a 500µm thick silicon sensor was irradiated. The aim of the measurements is to compare the responses of teh different materials and to investigate impurities in the sensors.

Here is a picture of the beam line:

March 2013 - present: Czech language courses undertaken on monthly base at a privat language school.

February 11, 2013: Course and test on radiation safety, efficient planning of experimental activities and the hirarchical structure of the Neutron Science Center in Los Alamos.

October 14-18, 2013: Workshop on micro- and nano dosimetry.

Venue: Dresden, GERMANY

Date: March 4-8, 2013

Description: Annual conference of the German Physical Society. The focus in Dresden was on particle, high energy and hadron physics.

Venue: Freiburg, GERMANY

Date: May 13-16, 2013

Description: Workshop hosted by the Freiburg Materials Research Centre. The sessions will focus on measurement technology and data anlysis for fixed gamma probes and mobile systems. Topics include new detector materials and methodologies for dose rate monitoring, gamma spectrometry, quality assurance, intercalibration measurements, and data integration.

Venue: Paris, FRANCE

Date: June 23-27, 2013

Description: I attended the very well organized IWORID workshop in Paris, where I had a poster presentation.

Date: November 30, 2012

Chip Probing in the Clean Room at CERN

Date: February 10-19, 2013

Time-of-Flight Measurement of Fast Neutrons at Los Alamos Neutron Science Center (LANSCE): The Time-ofArrival mode of the Timepix detectors permits the use of the Time-of-Flight technique. Thus, at the pulsed beam at LANSCE (Los Alamos Neutron Science Center) Timepix detector's responses were assigned to incident neutron energies up to 600 MeV.

Some impressions of "Atomic City":

Date: April 25, 2013

Dosimetric Measurement in Gamma Radiation Fields: Measurements with Timepix devices were carried out at SURO (Statni Ustav Radiacni Ochrany, EN: National Radiation Protection Institute, NRPI) in different gamma fields for dosimetric purposes. The sources 60-Co and 137-Cs and narrow X-ray spectra with known dose rates were available.

It is me and Kevin:

Date: May 03-05, 2013

Measurement at the Van-de-Graaff Accelerator in Prague: Nearly monoenergetic neutrons with energies of about 14 MeV were used for a calibration measurement and to verify the results obtained at LANSCE.

Date: May 21-22, 2013

Measurement of Protons at German Cancer Research Center (DKFZ) in Heidelberg: Measurements with Timepix detectors in monoenergetic proton beams with energies of 48 MeV, 150 MeV and 221 MeV were carried out. This data will help to understand reactions of protons in Silicon and especially how to seperate protons from neutrons in a mixed field.

Date: December 1-8, 2013

Measurement at the Los Alamos Neutron Science Center: It has been our second time at LANSCE. Unfortunately, there have been some troubles with the beam. Thus, we have not been able to measure everything we wanted to investigate.

Date: May 19 - 23, 2014

Training course on project management and entrepreneurship at CERN.

Date: Sept. 29 - Oct. 03, 2014

In the 3rd ARDENT meeting I met the other ESRs again, reported my achievements during the past year and attended a workshop on Quality Assurance in Radiation Therapy.

Venue: Port Douglas, Queensland, AUSTRALIA

Date: October 20 - 23

I attended the MMND biennual workshop on detectors for Micro-, Mini- and Nanodosimetry in hadron therapy and in space, which took place in Port Douglas. The workshop was chaired by Anatoly Rozenfeld. It was well organized with very good and interesting presentations. The first day was dedicated to detectors especially in Quality Assurance in Hadron and Microbeam Radiation Therapy (MRT). On the second day the focus was on Micro- and Nanodosimetry. On the third day, GEANT4 simulations were addresed and a session dedicated to the ARDENT project was held, where some of the ESR presented their work. Moreover, lectures to dosimetry and radiation in space were given by a medical doctor and physists.

Venue: Seattle, USA

Date: November 8 - 15

I attended the 2014 IEEE Nuclear Science Symposium and Medical Image Conference -21st Symposium on room-temperature semiconductor X-ray and gamma ray detectors- and presented the contribution "Track Analysis Techniques and Lineal Energy Transfer Measurements by Means of a Timepix Detector“ in the “Semiconductors Tracking and Spectroscopy“ poster session of the event. This poster showed some of the results from evaulation of proton and heavier ion measurements within the ULICE beam time in Heidelberg in February 2014.

Date: April 25, 2014

Czech Metrological Insitute in Prague: Measurement of the responses of the hodoscopes that are going to be installed in the ATLAS detector to slow and fast neutrons.

Date: December 4 - 7

Los Alamos Neutron Science Center: Timepix detectors were irradiated with neutrons up to 600 MeV at the FP30R of the Weapons Neutron Research facility of the Los Alamos Neutron Science Center. The detector responses will be assigned by using the Time-of-Flight technique. Measurements were peformed for the ATLAS-TPX device, which was rotated within the beam in steps of 30°, a Timepix detector with a 1 mm thick sensor layer and two TPX3 detectors with 300 µm thick sensors. The ATLAS-TPX and the Timepix were also set to the ToT mode.

Furthermore, CR39 tracking foils were placed at the positions of the TPX devices at different angles in the beam. Their responses will be compared to the detector responses of the Timepix devices.

Here is an example event measured by the TPX3, showing deposited energy and the time:

Venue: Casta-Papiernicka, SLOVAKIA

Date: April 26 - May 1, 2015

I attended the SWG 2015, i.e. Spring Workshop of GEANT4 organized by the ISOLDE collaboration. I have gained a first impression of the simulation framework on my secondment at ESA. Now I was able to get a deeper understanding of the simulation package. I have learned how to set up and install the GEANT4 packages on Linux and how to build own applications. The lectures were accompanied by tutorials and hands on examples. Beside learning the basic things about GEANT4, I have also gotten in touch with some developers of GEANT4, who can be adressed in case there are questions concerning my own GEANT4 application.

Most important! I found out how to make nice pictures:

Venue: Bruges, BELGIUM

Date: April 19 - 24, 2015

Description: I was at the International Conference on Individual Monitoring of Ionising Radiation (IM 2015). This conference was focussed on dose assessment internally and externally. However, the conference covered a broad range of applications and topics: Existing guidelines and changes in ISO standards, new developments in detector technologie and simulations, the monitoring of radiation workers in industry, inside hospitals and in research, possible alternative radiation detection techniques in case of nuclear incident (reactor blow up, etc.) the dose distributions in the treatment rooms in radiation therapy were adressed.

Venue: Budva, MONTENEGRO

Date: June 8 - 13, 2015

Description: I attended the RAD 2015 conference where I gave a presentation with the title "Study of neutron interactions in silicon by Timepix detectors" in the neutron and space radiation section. The conference covered a huge range of topics from radiation damage in silicon devices to radiobiology.

The social event was a boat trip in the beautiful Kotor bay. Here are some impressions:

Date: March 10 - 15, 2015

My colleague Ivan Caicedo and I were invited to perform measurements with Timepix devices at an C-12 ion beam of 1 GeV/A at the Nuclotron of JINR in Dubna. We have irradiated a telescope of 3 Timepix detectors opening their frames simultaneously and 2 Timepix3 of different thicknesses. Impressions and tracks measured with Timepix3:

Date: March 31 - April 09, 2015

The second part of the beam time reserved for Proba-V. We exposed Timepix and Timepix 3 detectors to argon ions of 75 GeV/A at the H8 beam line at SPS in CERN. A 4 cm thick polyethylene target was inserted to create a mixed radiation field. It will be tested, whether the different ion species produced by the target can be separated by the track shape, by the dE/dx information of by analyzing the delta electron component.

A track from the measurement of perpendicular particle impact (measured by a 1 mm thick TPX at a bias of 400V) and the beam profile (the centre of the tracks is filled into a 2D histogram):

Slices of the beam profile (ROOT can be fun):

More measured events: A track measured at an angle of 70 degree with respect to the sensor normal and an observed spallation event.

Easter Sunday lunch break up on Mont Saleve:

Date: May 16 - 24, 2015

Together with our colleagues from the University of Montreal we performed measurements at the Van-de-Graaff accelerator with protons of energies up to 11.4 MeV. We were using Timepix detector with CdTe, GaAs and silicon sensor layers of thicknesses 1 mm, 0.9 mm and 1 mm, respectively. Moreover, a Timpeix 3 device with a 500µm thick silicon sensor was irradiated. The aim of the measurements is to compare the responses of teh different materials and to investigate impurities in the sensors.

Here is a picture of the beam line: