All articles published by MDPI are made immediately available worldwide under an open access license. No specialpermission is required to reuse all or part of the article published by MDPI, including figures and tables. Forarticles published under an open access Creative Common CC BY license, any part of the article may be reused withoutpermission provided that the original article is clearly cited. For more information, please refer tohttps://www.mdpi.com/openaccess.
Feature papers represent the most advanced research with significant potential for high impact in the field. A FeaturePaper should be a substantial original Article that involves several techniques or approaches, provides an outlook forfuture research directions and describes possible research applications.
Feature papers are submitted upon individual invitation or recommendation by the scientific editors and must receivepositive feedback from the reviewers.
Editor’s Choice articles are based on recommendations by the scientific editors of MDPI journals from around the world.Editors select a small number of articles recently published in the journal that they believe will be particularlyinteresting to readers, or important in the respective research area. The aim is to provide a snapshot of some of themost exciting work published in the various research areas of the journal.
Original Submission Date Received: .
- Journals
- Active Journals
- Find a Journal
- Proceedings Series
- Topics
- Information
- For Authors
- For Reviewers
- For Editors
- For Librarians
- For Publishers
- For Societies
- For Conference Organizers
- Open Access Policy
- Institutional Open Access Program
- Special Issues Guidelines
- Editorial Process
- Research and Publication Ethics
- Article Processing Charges
- Awards
- Testimonials
- Author Services
- Initiatives
- Sciforum
- MDPI Books
- Preprints.org
- Scilit
- SciProfiles
- Encyclopedia
- JAMS
- Proceedings Series
- About
- Overview
- Contact
- Careers
- News
- Press
- Blog
Sign In / Sign UpSubmit
Journals
Photonics
Volume 11
Issue 5
10.3390/photonics11050413
Review Report
Submit to this JournalReview for this JournalPropose a Special Issue
►Article Menu
Article Menu
- Subscribe SciFeed
- Related Info Link
- More by Authors Links
announcementHelpformat_quoteCite
Need Help?
Support
Find support for a specific problem in the support section of our website.
Get Support
Feedback
Please let us know what you think of our products and services.
Give Feedback
Information
Visit our dedicated information section to learn more about MDPI.
Get Information
Open AccessTechnical Note
Peer-Review Record
Photonics 2024, 11(5), 413; https://doi.org/10.3390/photonics11050413 (registeringDOI)
byLuca Piersanti *
, Marco Bellaveglia, Fabio Cardelli, Alessandro Gallo, Riccardo Magnanimi, Sergio Quaglia, Michele Scampati, Giorgio Scarselletta, Beatrice Serenellini and Simone Tocci
Reviewer 1:Anonymous
Reviewer 2:Anonymous
Photonics 2024, 11(5), 413; https://doi.org/10.3390/photonics11050413 (registeringDOI)
Submission received: 20 March 2024/Revised: 10 April 2024/Accepted: 25 April 2024/Published: 29 April 2024
(This article belongs to the Special Issue Recent Advances in Free Electron Laser Accelerators)
Round 1
Reviewer 1 Report
Comments and Suggestions for Authors
In view of the fact that beam stability and timing jitter are of great interest and of increasing importance in the field of modern linear accelerators, the present work on the development and testing of a klystron phase feedback system within a pulse could be of importance in this field and represents an original approach. I recommend that this work be published if it contains some clarifications and improvements:
1) All acronyms (standard acronyms and author-defined acronyms) should be defined at first mention in the abstract and in the body of the article. Authors should define abbreviations and acronyms when they are used for the first time in the text, even if they have already been defined in the abstract. Abbreviations such as RF, LNF, SPARC_LAB and PFN are not defined in the abstract, but should be. Abbreviations such as HV, LO and some others are not defined in the text.
2) The customized oven-controlled crystal oscillator with low phase noise is used as the reference master oscillator in the system. The authors should specify the phase noise value of this reference master oscillator. In addition, it would be useful for the readers of this paper if the authors would cite some papers previously published in this journal that deal with the measurement of phase noise of oscillators, such as:
Lavrič, A.; Batagelj, B.; Vidmar, M. Calibration of an RF/Microwave Phase Noise Meter with a Photonic Delay Line. Photonics 2022, 9, 533. https://doi.org/10.3390/photonics9080533
3) In addition, the authors mention numerous experiments on conventional SASE and seeded FELs, Thomson backscattering, THz generation, plasma beam focusing and acceleration (PWFA) with FEL generation and laser interaction with matter, but they make no reference to these experiments.
4) The authors mention the Libera LLRF system in the paper. Again, it would be very helpful to the reader if the authors gave a reference to this system. The authors should add a reference to a publication about the Libera LLRF system.
5) Authors should describe the acronyms shown in Figure 2 in the caption of this figure.
6) The authors should explain what the GBW product mentioned in line 149 is. It would be nice if they could add the equation of how the GBW product is defined.
7) The authors should describe in the text how much power is taken by the RF directional couplers for the feedback in the klystron loop experimental setup shown in Figure 5a.
8) The authors mention in line 176 that a phase shifter with a wider bandwidth will be used in further investigations. It would be nice if they could express some expectations about what they want to achieve with it.
Author Response
All the answers are in the attached doc file.
Author Response File: Author Response.pdf
Reviewer 2 Report
Comments and Suggestions for Authors
The authors reported their results on the design and test of a klystron intra-pulse phase feedback system for electron linear accelerators. The fast intra-pulse feedback of an RF phase is quite important to have the ultimate stability of an electron linear accelerator for applications that require ultra-low timing jitters. The authors succeeded in implementing intra-pulse systems for S- and C-band RF plants. The achieved stability is high. I think this paper is valuable and can be a good reference for intra-pulse phase feedback for normal conducting RF linacs. The manuscript is well organized and no significant modifications are needed for publication. I only have a minor comment. The authors listed the R&D program that has been performed in SPARC_LAB in lines 68-70. I recommend authors add references to these activities if any report is available.
Author Response
All the answers are in the attached doc file.
Author Response File: Author Response.pdf
Cite
Export citation file:BibTeX |EndNote |RIS
MDPI and ACS Style
Piersanti, L.; Bellaveglia, M.; Cardelli, F.; Gallo, A.; Magnanimi, R.; Quaglia, S.; Scampati, M.; Scarselletta, G.; Serenellini, B.; Tocci, S.Design and Test of a Klystron Intra-Pulse Phase Feedback System for Electron Linear Accelerators. Photonics 2024, 11, 413.https://doi.org/10.3390/photonics11050413
AMA Style
Piersanti L, Bellaveglia M, Cardelli F, Gallo A, Magnanimi R, Quaglia S, Scampati M, Scarselletta G, Serenellini B, Tocci S.Design and Test of a Klystron Intra-Pulse Phase Feedback System for Electron Linear Accelerators. Photonics. 2024; 11(5):413.https://doi.org/10.3390/photonics11050413
Chicago/Turabian Style
Piersanti, Luca, Marco Bellaveglia, Fabio Cardelli, Alessandro Gallo, Riccardo Magnanimi, Sergio Quaglia, Michele Scampati, Giorgio Scarselletta, Beatrice Serenellini, and Simone Tocci.2024. "Design and Test of a Klystron Intra-Pulse Phase Feedback System for Electron Linear Accelerators" Photonics 11, no. 5: 413.https://doi.org/10.3390/photonics11050413
Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.
Article Metrics
Photonics,EISSN 2304-6732,Published by MDPI
RSSContent Alert
Further Information
Article Processing ChargesPay an InvoiceOpen Access PolicyContact MDPIJobs at MDPI
Guidelines
For AuthorsFor ReviewersFor EditorsFor LibrariansFor PublishersFor SocietiesFor Conference Organizers
MDPI Initiatives
SciforumMDPI BooksPreprints.orgScilitSciProfilesEncyclopediaJAMSProceedings Series
© 1996-2024 MDPI (Basel, Switzerland) unless otherwise stated
Disclaimer/Publisher’s Note: The statements, opinions and data contained in all publications are solelythose of the individual author(s) and contributor(s) and not of MDPI and/or the editor(s). MDPI and/orthe editor(s) disclaim responsibility for any injury to people or property resulting from any ideas,methods, instructions or products referred to in the content.
Terms and ConditionsPrivacy Policy
