David Krapohl

Universitetslektor|Senior Lecturer

Professional title: Senior Lecturer
Academic title: PhD (Engineering)
Department: Department of Computer and Electrical Engineering (DET)
Telephone: +46 (0)10-1428755
Email: david.krapohl@miun.se
Room number: S404
Location: Sundsvall
Research centers: Sensible Things that Communicate
Employee in the subject: Electronics, Electrical Engineering, Physics

David has a PhD degree in electronics from Mid Sweden University with a focus on the simulation of hybrid pixel detectors and neutron detectors. Now he is working with in the Milo project with X-ray systems for environmental monitoring.

David Krapohl has an engineering degree in mechatronics from Aachen University of Applied Sciences, Aachen, Germany. Half a year was a student exchange at Mälardalen University, Sweden.

Before coming to Sweden he worked as a research engineer at the University of Lübeck in the field of neuroscience (FEM simulation).

Area of interest

Hybride pixeldetectors (Medipix/Timepix)
Readout systems
X-ray radiation
Neutron (pixel) detectors
Pixel detector simulations (FEM, Monte Carlo)

Research

Medipix Collaboration (CERN)
Design of a semiconductor-based neutron detector (BrightnESS)
Timepix3 USB3 readout electronics (Glasgow University)

Teaching and tutoring

Course responsible in "Mätteknik för ingenjörer"
Lab responsible in "Ellära 1"
Supervision of a Master-by-Research student

Other information

If you are interested in a Master-by-Research position, feel free to send me an email. More information about research groups and projects as well as the Master programme is available here: https://www.miun.se/en/stc-research-centre/Research-Groups/Detector-and-Photonics https://www.miun.se/en/stc-research-centre/Research-Groups/Radiation-Sensor-Systems https://www.miun.se/en/stc-research-centre/Master-By-Research/

Research projects

Current

ImSpec - Multiple energy band imaging spectroscopy for material and object classification

Publications

Articles in journals
Conference papers
Doctoral theses, comprehensive summaries

Articles in journals

An, S. , Krapohl, D. , Thörnberg, B. , Roudot, R. , Schyns, E. & Norlin, B. (2023). Characterization of micro pore optics for full-field X-ray fluorescence imaging. Journal of Instrumentation, vol. 18: 01

Norlin, B. , An, S. , Granfeldt, T. , Krapohl, D. , Lai, B. , Rahman, H. , Zeeshan, F. & Engstrand, P. (2023). Visualisation of sulphur on single fibre level for pulping industry. Journal of Instrumentation, vol. 18: 01, pp. C01012-C01012.

An, S. , Krapohl, D. , González, C. , Rydblom, S. , Norlin, B. & Thungström, G. (2022). Geometrical influence on Hg determination in wet sediment using K-shell fluorescence analysis. X-Ray Spectrometry,

An, S. , Krapohl, D. , Norlin, B. & Thungström, G. (2020). Full-field X-ray fluorescence imaging with a straight polycapillary X-ray collimator. Journal of Instrumentation, vol. 15: 12

Dreier, T. , Krapohl, D. , Maneuski, D. , Lawal, N. , Schöwerling, J. O. , O'Shea, V. & Fröjdh, C. (2018). A USB 3.0 readout system for Timepix3 detectors with on-board processing capabilities. Journal of Instrumentation, vol. 13

Krapohl, D. , Schubel, A. , Fröjdh, E. , Thungström, G. & Fröjdh, C. (2016). Validation of Geant4 Pixel Detector Simulation Framework by Measurements with the Medipix Family Detectors. IEEE Transactions on Nuclear Science, vol. 63: 3, pp. 1874-1881.

Norlin, B. , Reza, S. , Krapohl, D. , Fröjdh, E. & Thungström, G. (2015). Readout cross-talk for alpha-particle measurements in a pixelated sensor system. Journal of Instrumentation, vol. 10

Schübel, A. , Krapohl, D. , Fröjdh, E. , Fröjdh, C. & Thungström, G. (2014). A Geant4 based framework for pixel detector simulation. Journal of Instrumentation, vol. 9: 12

Thungström, G. , Esebamen, O. X. , Krapohl, D. , Fröjdh, C. , Nilsson, H. , Petersson, S. & Brenner, R. (2014). Fabrication, Characterization and Simulation of Channel Stop for n in p-Substrate Silicon Pixel Detectors. Journal of Instrumentation, vol. 9: 7, pp. Art. no. C07013

Krapohl, D. , Fröjdh, C. , Fröjdh, E. , Maneuski, D. & Nilsson, H. (2013). Investigation of charge collection in a CdTe-Timepix detector. Journal of Instrumentation, vol. 8: May, pp. Art. no. C05003

Thungström, G. , Harrnsdorf, L. , Norlin, B. , Reza, S. , Krapohl, D. , Mattsson, S. & Gunnarsson, M. (2013). Measurement of the sensitive proﬁle in a solid state silicon detector, irradiated by X-rays. Journal of Instrumentation, vol. 8: 4, pp. Art. no. C04004

Fröjdh, E. , Fröjdh, C. , Gimenez, E. N. , Krapohl, D. , Maneuski, D. , Norlin, B. , O'Shea, V. , Wilhelm, H. & et al. (2013). Probing Defects in a Small Pixellated CdTe Sensor Using an Inclined Mono Energetic X-Ray Micro Beam. IEEE Transactions on Nuclear Science, vol. 60: 4, pp. 2864-2869.

Slavicek, T. , Kralik, M. , Krapohl, D. , Petersson, S. , Pospisil, S. & Thungström, G. (2012). A thermal neutron detector based on planar silicon sensor with TiB 2 coating. Journal of Instrumentation, vol. 7: 1, pp. Art. no. C01053

Krapohl, D. , Nilsson, H. , Petersson, S. , Pospisil, S. , Slavicek, T. & Thungström, G. (2012). Simulation of a silicon neutron detector coated with TiB 2 absorber. Journal of Instrumentation, vol. 7: 1, pp. Art. no. C01096

Esebamen, O. X. , Krapohl, D. , Thungström, G. & Nilsson, H. (2011). High resolution, low energy electron detector. Journal of Instrumentation, vol. 6: 1, pp. Art. no. P01001

Krapohl, D. , Esebamen, O. X. , Nilsson, H. & Thungström, G. (2011). Simulation and measurement of short infrared pulses on silicon position sensitive device. Journal of Instrumentation, vol. 6: C01036

Conference papers

Zeeshan, F. , Norlin, B. , Rahman, H. , Huthwelker, T. , Krapohl, D. , An, S. & Borca, C. N. (2022). Synchrotron measurements of Sulphonation degree from Chemimechanical pulp (CTMP) to optimize the pulping process for packaging products. Paper presented at the International Mechanical Pulp Conference (IMPC), Vancouver, Canada, June 2022

Zeeshan, F. , An, S. , Norlin, B. , Krapohl, D. & Rahman, H. (2021). Study of heavy metals including mercury within Fiber Banks of Västernorrland and Norrbotten counties by portable X-RayFluorescence (pXRF) spectrometry. In Accelerating the progress towards the 2030 SDGs in times of crisis.. pp. 265--276.

Fröjdh, C. , Krapohl, D. & Thungström, G. (2016). Hard X-ray imaging and particle detection with TIMEPIX3. In Proceedings of SPIE - The International Society for Optical Engineering. (Proceedings of SPIE)

Krapohl, D. (2013). Comparison of energy resolution spectra of CdTe TIMEPIX detector working in photon counting and time-over-threshold mode. In IEEE Nuclear Science Symposium Conference Record.. pp. Art. no. 6829825-

Fröjdh, C. , Krapohl, D. , Reza, S. , Fröjdh, E. , Thungström, G. & Norlin, B. (2013). Spectral resolution in pixel detectors with single photon processing. In Proceedings of SPIE - The International Society for Optical Engineering. (Proceedings of SPIE). pp. Art. no. 88520O-

Fröjdh, E. , Fröjdh, C. , Gimenez, E. , Krapohl, D. , Maneuski, D. , O'Shea, V. , Norlin, B. , Wilhelm, H. & et al. (2012). Probing Defects in a Small Pixellated CdTe Sensor Using an Inclined Mono Energetic X-Ray Micro Beam. In 2012 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE RECORD (NSS/MIC). (IEEE Nuclear Science Symposium Conference Record). pp. 4233--4236.

Krapohl, D. , Norlin, B. , Fröjdh, E. , Thungström, G. & Fröjdh, C. (2010). Simulation of the Spectral Response of a Pixellated X-Ray Imaging Detector in Single Photon Processing Mode. In 2010 Nuclear Science Symposium and Medical Imaging Conference.

Norlin, B. , Fröjdh, E. , Krapohl, D. , Fröjdh, A. , Thungström, G. & Fröjdh, C. (2010). Spectroscopic X-Ray Imaging Using a Pixelated Detector with Single Photon Processing Readout. In Proceedings of 2010 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE. (IEEE Nuclear Science Symposium Conference Record). pp. 1074--1078.

Krapohl, D. , Loeffler, S. , Moser, A. & Hofmann, U. G. (2009). Microstimulation in The Brain : Does Microdialysis Influence the Activated Volume of Tissue?. In Proceedings of the COMSOL Conference Milan 2009. Milan :

Doctoral theses, comprehensive summaries

Krapohl, D. (2015). Monte Carlo and Charge Transport Simulation of Pixel Detector Systems. Dis. (Comprehensive summary) Sundsvall : Mid Sweden University, 2015 (Mid Sweden University doctoral thesis : 215)