审稿2021年1月24日

稿件：Quench and self-protecting behaviour of an intralayer no-insulation (LNI) REBCO coil at 31.4 T

审稿意见

• Some pictures can obviously be set as vector diagrams, such as Figure 13 in Page 17. Some other figures are too blurry.

• Page 1 Line 31
  I noticed that the content of the article is particularly rich, including introduction of magnets, excitation and quench processes, comparison of simulation results, and some discussions on contact resistivity ${\rho}_{ct}$.
  It would be pretty nice if you clearly point out the consistent logical line to connect these contents at the very beginning.

• Page 2 Line 5-6
  under a winding tension of 4.9 N (0.5 kgf).
  Why? Is there any theoretical basis or practical factors for the choice of winding tension?

• Page 2 Line 8-9
  We wound the REBCO conductor with the superconducting layer facing the inner side. For applying the LNI method, we inserted 26 μm-thick sheets laminated with PET (18 μm) and copper (8 μm) between all layers with the copper surface facing the inner side.
  Meaning that the copper NI layer faces the no-superconducting layer? That is a key which should be pointed out.

• Page 3 Line 31-35 & Page 14 Figure 9
  discharging process. Vre-n shows those to ~2.3 µΩ during charging and 3.3 µΩ during discharging, which implies that an electromagnetic force progressively delaminated the soldering between the REBCO conductor and the negative (inner) electrode.
  It seems that the joint resistance has a rising process under high field. what is your opinion and protection method?

• Page 19 Figure 18
  Can you compare the simulation results and experimental results in one figure? Parallel comparison can only show that the shapes are consistent.