Next Generation Design and Prospects for Cannex
Round 1
Reviewer 1 Report
The paper “Next generation design and prospects for CANNEX” is an intriguing one. It is very well written, with a very good analysis of errors which builds on previous (little) data and proposes sensible modifications to the apparatus in order to be able to obtain interaction data between two parallel plates. With the proposed modifications CANNEX will be back to its proposed sensitivity from many years back.
While it is very complete in its description, I feel it reads more like a proposal than a scientific paper. On the other hand, it has new results that warrant the publication in its current (or near to) form.
That being said, the paper is too long up to section 5. None of the material covered in sections 2-4 is novel. While it is OK to have it as a review, it is a very limited one, since it applies to only this application. If the authors prefer to leave it within the current scope, I would suggest they extend the discussion to include spin-spin interactions in the DM sector, and why their approach is not good. Similar for other potential DE scenarios beyond Symmetrons and Chameleons.
Here are things that in my view the authors need to address:
Line 371-remove TBD and following text.
Fifth lime in page 15. Revise the expression for the pressure (k should be in the numerator)
Figure 3: the caption repeats the definition of the left and right panels.
Figure 5: labels in c) and d) are confusing. Provide a better explanation in the caption. In particular, I do not understand SNR in these.
The error budget in Table 1 would benefit with an explanation on the table itself on the errors’ origins.
When discussing the effect of curvature on the plates, the authors should clarify that knowing the curvature makes the calculation on Yukawa like potentials exact, it is a good approximation to use Dejarguin in quantum vacuum, and a very poor one in DE measurements.
The limits in Figures 11 and 12 seem to be obtained disregarding the Casimir interaction. The authors should clarify how the Casimir interaction will be subtracted from the data.
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Author Response
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Reviewer 2 Report
This paper describes the CANNEX-experiment. It gives an excellent and exhausting overview on the dark matter and energy problems, which appear the biggest challenge to physics in the 21st century. On a high level of representation, the problem, starting from cosmological observation over theoretical models is described. Special attention is paid to the vacuum energy, its puzzles up to recent advances. The experimental side is described in much detail, which I, as a theoretician, however, cannot follow. I think this paper gives researchers a very good introduction to the field and recommend publication.
Author Response
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