Abstract
1 Introduction
‘Innovative Education and Training in high power laser plasmas’ (PowerLaPs)[
The main aim of the programme is to challenge the student participants to expand their knowledge and scientific skills in areas that are relevant to the current state-of-the-art research in the field of laser plasma interactions (LPI) and inertial fusion energy[
Student attendees gain additional soft skills and expand their research networks by interaction with both students and academics in a range of different settings from quite formal lecture-style teaching to social settings. This encourages cross-border cooperation and enhances the professional skills of the attendees.
Sign up for High Power Laser Science and Engineering TOC. Get the latest issue of High Power Laser Science and Engineering delivered right to you!Sign up now
Throughout the programme, there are a series of assessment exercises that test the students’ grasp of the material that has been delivered. These take the form of both open-book written exams carried out in a controlled environment (the results of which are discussed below) as well as longer course-work exercises, which are completed in the students’ own time outside of the lectures and laboratories.
One interesting feature of the programme is that although the Learning Teaching Training (LTT) activities and two Intensive Programmes (IPs) that form the basis of the PowerLaPs are constructed as a single educational course, students are not required to attend all of the sessions. Students receive individual certification for attendance at each of the LTTs/IPs, and they can opt to attend from one to all of the events. For this reason, the individually taught modules have to be carefully designed to enable the participation of students who have not necessarily attended previous workshops. As shown in Ref. [
The material developed as part of the PowerLaPs programme will be made available worldwide through the PowerLaPs website, which was set up partially in parallel to the evolution of the programme[
2 Subject areas
The different topics covered by the PowerLaPs programme are divided into four areas of specialization labelled O1, O2, O3 and O4. Each of these is described below.
2.1 O1 Plasma Physics – Theory and Experiments
This is the theoretical and experimental part of the Plasma Physics thematic priority educational material. The LTT in this area took place at the University of Bordeaux in January 2018, with further education in this area taking place at the first IP that was held at the Hellenic Mediterranean University, IPPL in July 2018. The delivery of this material is described in detail in Ref. [
2.2 O2 High Power Laser Matter Interactions/High Energy Density Physics – Theory and Experiments
This is the theoretical and experimental part of the High Power Laser Matter Interactions/High Energy Density Physics material. The LTT in this area took place at Queen’s University Belfast in March 2018, with further education in this area taking place at the first IP that was held at the Hellenic Mediterranean University, IPPL in July 2018. The delivery of this material is described in detail in Ref. [
2.3 O3 Computational Modelling and Simulations in Laser Matter Interactions
This is the Computational Modelling and Simulations in Laser Matter Interactions material. The LTT in this area took place at the Prague Technical University in January 2019, followed by further training at the second IP in July 2019 at the Hellenic Mediterranean University, IPPL. The LTT in Prague included the following topics, delivered in lecture-style format: (1) Fundamentals of Numerical Methods, (2) Solving Partial Differential Equations (PDEs), (3) Simulations of Laser-Produced Plasmas (LPP), (4) Particle-In-Cell (PIC) Simulations of Laser Plasma Interactions (LPI), (5) Fluid Simulations of LPP, (6) Monte Carlo Simulations for LPI, (7) Description of HED Matter, (8) Atomic Physics of Multiply Ionized Plasmas and (9) Parallel Algorithms for LPP Simulations; and in addition, the following laboratory sessions: (1) Numerical Methods, (2) PIC Simulations of LPI, (3) Fluid Simulations of LPP and (4) Monte Carlo Simulations for LPP.
2.4 O4 Laser Plasma Diagnostics – Theory and Experiments
This is the Laser Plasma Diagnostics related educational material. The LTT in this area took place at the University of Salamanca in March 2019, followed by further training at the second IP. The LTT in Salamanca included the following topics, delivered in lecture-style format: (1) Introduction to Laser-Plasma Diagnostics, (2) Characterization of High Intensity Lasers, (3) Photonic-Based Electron Density Diagnostics, (4) K-Alpha Measurement of Proton Beams, (5) Optical Streak Camera Methods, (6) Numerical Methods for Diagnostics, (7) Introduction to Solid-State Lasers, (8) Terahertz Detection and Emission Using Plasma-Wave-Based Devices, (9) Ultrafast Laser Pulse Characterization and Applications, (10) Charged Particle Transport in Warm Dense Matter and HED Plasma, (11) Under-Critical and Near-Critical Density Plasmas: Laser-Driven Particle Acceleration and Diagnostics, (12) Charged Particle Detectors – the Thompson Parabola, (13) Liquid Targets, (14) X-ray Diagnostics – the Kirk Patrick-Baez Microscope, (15) Charged Particle Detectors – Time of Flight Techniques and (16) Radiation Protection in Short Duration Events; and in addition, the following laboratory sessions: (1) Terahertz Generation, (2) Liquid Target Interferometry, (3) X-ray Generation and Diagnostics and (4) Oscillators.
The second IP, held at IPPL in Crete, spanned both O3 and O4. The lectures and laboratories held at the IP that are relevant to these two topics are therefore listed together. The following topics were delivered in a lecture-style format: (1) Plasma Kinetics – PDEs for Plasma and Particles, (2) PIC Simulations of LPI, (3) Introduction to Laser-Plasma Process Diagnostics, (4) Advanced PIC Simulations and their Applications, (5) Diagnostics for Ions and Ions as Diagnostics, (6) Fokker-Planck and Fluid Simulations of LPI, (7) Shock Dynamics and Diagnostics, (8) Fluid Simulations – Atomic Physics and Radiation Transport, (9) Diagnostics for Inertial Fusion, (10) Atomic Physics in Plasma Diagnostics, (11) High Harmonic Generation as a Diagnostic for Laser Contrast Using Simulations and Experiments, (12) Novel Streaking Experiments for Studying Ultrafast Proton Bursts from LPP, (13) Ultrafast Laser Diagnostics, (14) Multiphysics Simulations for LPP, (15) Ultrafast Bunch Duration Measurements through Optical Diagnostics, (16) Diagnosing and Simulating Hydrodynamic Behaviour in High Intensity Short Pulse LPI and (17) Astrophysics with High Power Lasers; and in addition, the following laboratory sessions: (1) Laser Matter Interaction Diagnostics for a Terawatt Ultrafast Laser System, (2) Plasma Simulations – Magnetohydrodynamic Simulations, (3) Laser Matter Interactions – Finite Element Method (FEM) Simulations, (4) Laser Matter Interaction Diagnostics, (5) Plasma Pinch Diagnostics, (6) Laser-Solid Target Interaction – FEM Simulations and (7) PIC Simulations of Particle Acceleration.
3 Participation and usage statistics
All of the participating institutes have taken good advantage of the resources offered by the PowerLaPs programme. More detailed figures are provided below both for LTT attendance and e-Class platform usage.
3.1 LTT attendance
All six of the LTTs conducted to date have been well attended. Nonlocal institutes received funding from the programme to send three students to each of the LTTs/IPs, meaning that the number of visiting students who can be funded to each activity is 21, with the home institute sometimes having a larger number of students participate. Attendance figures for the first year of PowerLaPs are given in Ref. [
3.2 e-Class platform usage
The e-Class platform (which is currently only accessible to teachers, tutors and students from the partner universities) has been used by all of the students who have participated in the programme in addition to some others from the participating institutes. The material related to O3 has thus far been visited by 126 participants, of whom 19 were academics and the remaining 107 students. The total number of visits made to the site by these users was 470. The educational material related to O4 has received 126 visitors, of whom (again) 107 were students and the remainding academics. The total number of site visits by these users was 347. In common with the O1 and O2 usage data that are reported in Ref. [
4 Student performance
In the Prague LTT, the average mark attained across the cohort of 22 student attendees was 60.00% with a standard deviation of 11.41. In the Salamanca LTT, the average mark attained by a different set of 22 student attendees was 68.88% with a standard deviation of 12.48. In the second IP in Crete, the average mark among the 30 student attendees was 63.48% with a standard deviation of 8.82. There are no strong trends to discuss here, and the interested reader is referred to Ref. [
Metric | O1 LTT | O2 LTT | IP1 | 03 LTT | 04 LTT | IP2 | Mean | Expert |
---|---|---|---|---|---|---|---|---|
All actions were performed on time by all partners | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
Efficiency of the structure of teaching modules | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
Mean value of student’s performance in assessments | 6.4 | 7.7 | 7.2 | 6.0 | 6.8 | 6.4 | 6.8 | 7 |
Quality and quantity progress on deliverables | 9 | 8 | 9 | 9 | 9 | 9 | 8.8 | 9 |
Number of attendants per partner | 9.2 | 9.6 | 10.0 | 9.2 | 8.3 | 9.1 | 9.2 | 9 |
Visits, hits and downloads on the e-Class and PowerLaPs site | 9 | 8 | 9 | 9 | 9 | 9 | 8.8 | 10 |
Mean value from questionnaires of participants | 8.5 | 8.6 | 9.0 | 8.4 | 8.8 | 8.9 | 8.7 | 9 |
Mean | 8.9 | 8.8 | 9.2 | 8.8 | 8.8 | 8.8 | 8.9 | 9.1 |
Table 1. Quantitative performance metrics for each of the LTTs in the PowerLaPs programme.
5 Multiplier event
In August 2019, a Multiplier Event was held at the University of Ioannina, with meetings and lectures spanning 2 days. On the first day, principal investigators (PIs) from the institutes involved in PowerLaPs met to formally discuss and summarize the PowerLaPs programme. On the second day, the PIs gave a series of talks and lectures to their colleagues, assembled undergraduate and graduate students from the University of Ioannina and other Greek institutes, attendees from the private sector and an external observer and expert in the field of high power laser plasma physics. Topics included a summary of the PowerLaPs programme, a summary of the evaluation and performance of the programme and a set of five physics lectures describing core elements of the programme for the student members of the audience. The total number of student attendees at this 1-day event was 61, the majority of these coming from the University of Ioannina (53).
6 Dissemination
PowerLaPs outputs have been assembled into an e-Class platform that is open to partner institutions, which will be later made accessible worldwide. The e-Class platform provides access to all of the digital educational and training material that has been delivered as part of the programme.
The University of Ioannina has built and is administrating the web page of the programme[
The Hellenic Mediterranean University is taking the lead in publicizing the programme using social media. This and our previous paper (Ref. [
7 Programme evaluation
The success of each of the six LTTs is assessed in terms of seven metrics: (1) whether all actions were performed on time by all partners, (2) the efficiency of the structure of teaching modules in order to result in the proper outcomes, (3) the mean value of student’s performance in assessments, (4) quality and quantity progress of deliverables, (5) the number of attendants per partner, (6) the number of visits, hits and downloads on the e-Class and PowerLaPs site and (7) the mean value from questionnaires of participants (described in more detail below). Each of these metrics is scored numerically out of 10, to two significant figures. These results and programme averages are presented in Table
The external expert in making his final assessment of the programme also grades its success in terms of the following three metrics: (1) the successful accomplishment of the project, (2) the number of attendants influenced and of beneficiaries of PowerLaPs and (3) the overall quality and quantity, the progress of the deliverables’ completeness during the lifespan of the project and the final intellectual outputs of O1–O4. Each of these metrics is also scored numerically out of 10, to two significant figures. The programme was awarded 10 for each of these three metrics by the external expert, indicating that it was a success.
7.1 Questionnaires
As part of the assessment of the performance of the programme, both teachers and students who were involved in the PowerLaPs LTTs were asked to complete questionnaires in order to relate their level of satisfaction with the content and delivery of the programme material. These questionnaires were broken down into eight distinct sections, each with a set of relevant questions scored on an integer rating scale of 1–5, with 5 representing the best case. The eight different sections of the questionnaire along with the mean scores across all six LTTs were: (1) Objectives of the study plan (4.37), (2) Planning of the teaching (4.40), (3) Development of teaching and learning evaluation (4.30), (4) Student admission (4.31), (5) Student guidance (4.32), (6) Academic infrastructure (4.49), (7) Teacher evaluation (4.4) and (8) Training results (4.56). There was little variation among the different LTTs as shown in the questionnaire-based metric in Table
In addition, we collected some comments from the students, a few of which are given below anonymously.
The schools provided a great opportunity to network with other students and academics in the laser-plasma field. It also introduced me to facilities I had not heard of yet and opened up future collaboration options.
A constructive and rewarding experience, helping us to develop the skills and knowledge we need in this dynamic and innovative field.
The training schools provided a broad spectrum of lectures which meant you engaged with a larger field of work that normal. This meant the understanding was improved in a range of fields rather than on a single narrow topic. As someone who primarily produces simulations, the chance to get lectures from experimental experts was of great benefit in understanding how experimentalists work and the results experiments can produce. The school provided the opportunity to engage with students and academics from across Europe for a prolonged period of time, which was just as engaging culturally as it was academically.
The PowerLaPs training school provided an excellent assortment of teaching materials and hands-on sessions, while offering an exciting opportunity to meet a wider international community of fellow postgraduate laser-physics students.
PowerLaPs has given me a good balance of theory and numerical training in all aspects of laser-plasma research with the opportunity to apply what I learned in hands-on experiments. It has also been a great networking opportunity for me, giving me the chance to meet and work with a number of people across a wide range of facilities.
The PowerLaPs training school was very beneficial in connecting me to academics and other students across Europe. The experimental courses were particularly useful and the content has been applied to experiments relevant to the PhD topic.
7.2 Summary statement of the external expert observer
The expert evaluation of the PowerLaPs programme was performed by Prof. George Throumoulopoulos from the Department of Physics at the University of Ioannina. He writes:
All the above actions were properly advertised and disseminated by the partner institutions either on the web pages of the institutes and/or the official web page of the programmehttps://powerlaps.chania.teicrete.gr/ as well as other events. Each partner organization proposed and sent a maximum of three students as a sending partner to visit the various LTTs. Only in a few cases were three students not able to be sent by each partner. The lectures and the supporting educational documents of the LTTs were uploaded on time from the tutors in the form of documents, manuals, presentations and tutorials to the e-Class platform. Students were registered to the e-Class platform and gained early access to the educational material providing them with time to get prepared for the LTTs. Attendants had a short exam session on the fifth day of the shorter LTTs and received further instructions from the tutors for implementing their continuous assessment exercises, and more generally studying plasma physics, in the run-up to the IPs in Crete. For the two IPs held at Rethymnon in Crete, up to one teacher from each partner organization travelled to Crete to lecture. A complete educational course based on the intellectual outputs was offered. The dissemination of the programme was pursued by the following actions: (1) ‘traditional’ dissemination actions involving two publications in relevant journals, state of the art reports, publications in popular public journals for science, newspapers, etc., (2) ‘modern’ dissemination actions involving electronic tools: Facebook, advertisement via web pages, etc., (3) e-educational, e-training, e-learning, and e-tutoring material of PowerLaPs being released on the website, and (4) a multiplier event.
The expert’s overall evaluation scores are presented in the final column of figure Table
8 Conclusions
PowerLaPs is a novel programme of short LTTs and IPs, combining a multi-centre approach with a range of different delivery formats. Six LTTs, including two IPs, have been carried out, covering the topics of (i) plasma physics, (ii) high power laser matter interactions and HED physics, (iii) computational modelling and simulations in laser matter interactions and (iv) laser plasma diagnostics. All six events have been well attended with a total of 85 students having formally attended at least one of the six events. Student performance has been within the expected range.
References
[1] PowerLaPs website: .. https://powerlaps.chania.teicrete.gr/
[2] Erasmus Plus website: .. http://ec.europa.eu/programmes/erasmus-plus/
[7] Collection of Special Topic papers on inertial confinement fusion (Special Issue), Nuclear Fusion, Volume 54, Issue 5 (2014)..
[8] National Ignition Facility website: .. https://lasers.llnl.gov/
[9] Extreme Light Infrastructure website: .. https://eli-laser.eu/
[10] CILEX-APOLLON website: .. https://portail.polytechnique.edu/luli/en/cilex-apollon/apollon
[11] The European X-Ray Free-Electron Laser website: .. https://www.xfel.eu/
[12] J. Pasley, G. Andrianaki, A. Baroutsos, D. Batani, E. P. Benis, M. Borghesi, E. Clark, D. Cook, E. D’Humieres, V. Dimitriou, B. Dromey, M. Ehret, I. Fitilis, A. Grigoriadis, S. Kar, E. Kaselouris, O. Klimo, M. Koenig, K. Kosma, G. Koundourakis, M. Kucharik, A. Lavery, J. Limpouch, Y. Orphanos, N. A. Papadogiannis, S. Petrakis, D. Riley, M. S. Rivetta, L. T. Pascual, J. J. Santos, A. Skoulakis, I. Tazes, V. Tikhonchuk, J. Trela, C. Tsitou, L. Volpe, S. White, M. Yeung, M. Tatarakis. High Power Laser Science and Engineering, 7, e23(2019).
Set citation alerts for the article
Please enter your email address