A Dynamic Pumping Model for a Vacuum-Sealed Gigawatt Repetitively Operated High-Power Microwave Source

Round 1

Reviewer 1 Report

Minor Comment

Correct Key word ; High-power microwave, single dash

Fig .2. Improve quality

Author Response

We are very grateful for your comments on the manuscript. According to your advice, we tried our best to amend the relevant part and made some changes in the manuscript. These changes will not influence the content and framework of the paper. All of your questions were answered below.

Author Response File: Author Response.pdf

Reviewer 2 Report

Review Comments for Manuscript Number: electronics-1925275-peer-review-v1

Title:	A dynamic pumping model for a vacuum-sealed gigawatt repetitively operated high power microwave source
Journal:	Electronics MDPI

 

A numerical and experimental study concerning a vacuum sealed dynamic pumping model. The numerical results show that the maximum pressure at the diode is larger than the equilibrium pressure, and the pressure recovery time is three times the duration of a single pulse. The experimental results confirmed the simulation ones. The paper performs a good base for the upcoming simulation techniques. However, the novelty and contributions of this work are poor.

1.     Enrich your introduction with more related references.

2.     Major English revision is required.

3.     Are there similar models used in previous studies that are similar to yours?

4.     Please provide the mesh details.

5.     Did you use ANSYS Maxwell in your simulation?

6.     Is equation 1.4 taken from the software guideline?

7.     The results must be further discussed.

8.     The conclusions must be rewritten.

9.     The authors should revise the entire manuscript. Compare their results with the prior art. Have further discussions for their results side by side with clear explanations for the simulation models. Finally, show the main contribution of this work and how it may help in advance the upcoming work.

Author Response

Thank you very much for your comments and suggestions. First, we appreciate for Reviewers’ warm work earnestly, and we are very happy that the reviewers are interested in this manuscript. Besides, we accept the corrections suggested by the reviewers and have made major revisions to this manuscript. We hope that the correction will meet with approval.

Author Response File: Author Response.pdf

Reviewer 3 Report

This work presents simulation and experimental results of a dynamic pumping model. There are some notes about this work done, including:

1. The journal's policy must be followed when writing the paper.

2. What is the main contribution of the paper?

3. What are the main objectives achieved from this work?

4. What is new in the paper compared to the following works:

-A Frequency Stable Vacuum-Sealed Tube High-Power Microwave Vircator Operated at 500 Hz (DOI: 10.1109/LED.2015.2408216)

-Operation of a Sealed-Tube-Vircator High-Power-Microwave Source (DOI: 10.1109/TPS.2012.2192454)

-O-TYPE METAMATERIAL HIGH POWER MICROWAVE SOURCE WITH 310 MW OUTPUT POWER (https://indico.cern.ch/event/572801/timetable/?view=standard)

-Kim, W.-I.; Kim, S.-H.; Ko, K.-C. Investigation of the Optimum Diameter of the Ring Reflector for an Axial Virtual Cathode Oscillator. Electronics 2022, 11, 2002. https://doi.org/10.3390/electronics11132002.

5.What are the pros and cons of the dynamic pumping model shown in Figure 1?

6. How does the diode system work? his nature?

7. Write references according to the journal's policy.

8. Use the following references:

-Walter, J.W.; Lynn, C.F.; Dickens, J.C.; Kristiansen, M. Operation of a Sealed-Tube-Vircator High-Power-Microwave Source. IEEE Trans. Plasma Sci. 2012, 40, 1618–1621

-Mumtaz, S.; Lim, J.S.; Ghimire, B. Enhancing the power of high power microwaves by using zone plate and investigations for the position of virtual cathode inside the drift tube. J. Plasma Phys. 2018, 25, 103113.

-Li, L.; Men, T.; Liu, L. Dynamics of virtual cathode oscillation analyzed by impedance changes in high-power diodes. Int. J. Appl. Phys. 2007, 102, 123309

-Jeon, W.; Lim, J.E.; Moon, M.W.; Jung, K.B.; Park, W.B.; Shin, H.M.; Seo, Y.; Choi, E.H. Output characteristics of the high-power microwave generated from a coaxial vircator with a bar reflector in a drift region. IEEE Trans. Plasma Sci. 2006, 34, 937–944

-Adhikary, B.; Shyam, A.; Shukla, R.; Sharma, S.K. Fast Marx Generator for Directly Driving a Virtual Cathode Oscillator. J Korean Phys Soc. 2011, 59, 3476–3480

-Barker, R.J.; Schamiloglu, E. High-Power Microwave Sources and Technologies; Wiley-IEEE Press: Hoboken, NJ, USA, 2001

-Sedek, E.; Slomski, R. Overview of Microwave Direct Energy Weapons. In Proceedings of the 2015 Signal Processing Symposium (SPSympo), Debe, Poland, 10–12 June 2015; pp. 1–3.

-Schamiloglu, E. High Power Microwave Sources and Applications. IEEE MTT-S. 2004, 2, 1001–1004.

-Li, L.; Men, T.; Liu, L. Dynamics of virtual cathode oscillation analyzed by impedance changes in high-power diodes. Int. J. Appl. Phys. 2007, 102, 123309.

 

Author Response

Thank you very much for your comments and suggestions. First, we appreciate for Reviewers’ warm work earnestly, and we are very happy that the reviewers are interested in this manuscript. Besides, we accept the corrections suggested by the reviewers and have made major revisions to this manuscript. We hope that the correction will meet with approval.

Author Response File: Author Response.pdf

Round 2

Reviewer 2 Report

Accept as is

Author Response

It is an honor to have your approval of our work. And we have learnt a lot from the questions you have asked and would like to thank you for your valuable comments on our manuscript.

Author Response File: Author Response.docx

Reviewer 3 Report

Thanks for the edits made. But there are some questions that are not answered in the paper. Among these questions, I mention the following:

1. What is the main contribution of the paper?

2. What are the main objectives achieved from this work?

3. What is new in the paper compared to the following works:

-A Frequency Stable Vacuum-Sealed Tube High-Power Microwave Vircator Operated at 500 Hz (DOI: 10.1109/LED.2015.2408216)

-Operation of a Sealed-Tube-Vircator High-Power-Microwave Source (DOI: 10.1109/TPS.2012.2192454)

-O-TYPE METAMATERIAL HIGH POWER MICROWAVE SOURCE WITH 310 MW OUTPUT POWER (https://indico.cern.ch/event/572801/timetable/?view=standard)

-Kim, W.-I.; Kim, S.-H.; Ko, K.-C. Investigation of the Optimum Diameter of the Ring Reflector for an Axial Virtual Cathode Oscillator. Electronics 2022, 11, 2002. https://doi.org/10.3390/electronics11132002.

4.What are the pros and cons of the dynamic pumping model shown in Figure 1?

5. How does the diode system work? his nature?

 

Author Response

We are very grateful for your comments on the manuscript. According to your advice, we tried our best to amend the relevant part and made some changes in the manuscript. These changes will not influence the content and framework of the paper. All of your questions were answered below. And here we list the changes and marked them in red in the revised paper.

Author Response File: Author Response.pdf

Round 3

Reviewer 3 Report

 

Thank you for the edits made. But these amendments are not sufficient for the purpose, there are questions that were not answered in the paper.

1. What is the main contribution of the paper?

2. What are the main objectives achieved from this work?

3. What is new in the paper compared to the following works:

-A Frequency Stable Vacuum-Sealed Tube High-Power Microwave Vircator Operated at 500 Hz (DOI: 10.1109/LED.2015.2408216)

-Operation of a Sealed-Tube-Vircator High-Power-Microwave Source (DOI: 10.1109/TPS.2012.2192454)

-O-TYPE METAMATERIAL HIGH POWER MICROWAVE SOURCE WITH 310 MW OUTPUT POWER (https://indico.cern.ch/event/572801/timetable/?view=standard)

-Kim, W.-I.; Kim, S.-H.; Ko, K.-C. Investigation of the Optimum Diameter of the Ring Reflector for an Axial Virtual Cathode Oscillator. Electronics 2022, 11, 2002. https://doi.org/10.3390/electronics11132002.

4.What are the pros and cons of the dynamic pumping model shown in Figure 1?

5. How does the diode system work? his nature?

6.Please, do a comparative study with published works on the same topic.

Author Response

Dear reviewers：

  I am pleased that you have reviewed my research work and that you have made many valuable comments.  I have also gained a lot from these revisions by gradually refining the article and by looking at this article from the reader's perspective. However, there may be some disagreement between us on the interpretation of these issues. Initially, I provided some explanation of the issues involved, but it may not have been fully reflected in the article. In the second revision, however, I can confirm that I have explained some of the issues in more depth and added literature references to some points that may be unfamiliar to the reader, and added appropriate content to the article accordingly, and I hope that this time you can satisfied with this revised version.

  Furthermore, we could communicate again if there are any details of the content that are unclear. I also hope that the article will be published as soon as possible, as this will also affect my graduation to some extents, so please do take the trouble.

Author Response File: Author Response.docx