A Cryogen-Free 25-T REBCO Magnet With the Extreme-No-Insulation Winding Technique
<|begin_of_text|><|start_header_id|>system<|end_header_id|> You are a research archivist expert in dataset metadata. Answer the question truthfully.  <|eot_id|><|start_header_id|>user<|end_header_id|> Here is the Description of a dataset. Description:'We present the operation result of a cryogen-free 23.5 T/ϕ12.5 mm-cold-boremagnet prototype composed of a stack of 12 no-insulation (NI) REBCO single pancake coils—ten middle coils of 6-mm wide and two end coils of 8-mm wide tape—forming 6 double pancake (DP) coils with inner joints. Each coil was wound with the tape having only 1-μm-thick copper layer on each side to overcome the conductor thickness uniformity issue and enhance the mechanical strength within the winding, and then, additional electrical shunting by thin layers of solder was applied on the top and bottom surfaces of eachDPcoil for effective cooling and quench protection—called extreme-NI winding technique.With this small prototypemagnet towards a benchtop 1-GHzNMR,wevalidate our coil design that include conductor performance, screening-currentinduced field and stresses, ' . Please return only a json list of at most 3 Keywords corresponding to the Description:.<|eot_id|><|start_header_id|>assistant<|end_header_id|> {"Answer" : ["Extreme-No-Insulation","High-Field Magnets","no- Insulation","Nuclear Magnetic Resonance","REBCO magnets"]} <|eot_id|>
 Here is the Description of a dataset. Description:'We present the operation result of a cryogen-free 23.5 T/ϕ12.5 mm-cold-boremagnet prototype composed of a stack of 12 no-insulation (NI) REBCO single pancake coils—ten middle coils of 6-mm wide and two end coils of 8-mm wide tape—forming 6 double pancake (DP) coils with inner joints. Each coil was wound with the tape having only 1-μm-thick copper layer on each side to overcome the conductor thickness uniformity issue and enhance the mechanical strength within the winding, and then, additional electrical shunting by thin layers of solder was applied on the top and bottom surfaces of eachDPcoil for effective cooling and quench protection—called extreme-NI winding technique.With this small prototypemagnet towards a benchtop 1-GHzNMR,wevalidate our coil design that include conductor performance, screening-currentinduced field and stresses, ' . Please return only a json list of at most 3 Keywords corresponding to the Description:.
We present the operation result of a cryogen-free 23.5 T/ϕ12.5 mm-cold-boremagnet prototype composed of a stack of 12 no-insulation (NI) REBCO single pancake coils—ten middle coils of 6-mm wide and two end coils of 8-mm wide tape—forming 6 double pancake (DP) coils with inner joints. Each coil was wound with the tape having only 1-μm-thick copper layer on each side to overcome the conductor thickness uniformity issue and enhance the mechanical strength within the winding, and then, additional electrical shunting by thin layers of solder was applied on the top and bottom surfaces of eachDPcoil for effective cooling and quench protection—called extreme-NI winding technique.With this small prototypemagnet towards a benchtop 1-GHzNMR,wevalidate our coil design that include conductor performance, screening-currentinduced field and stresses, 
Extreme-No-Insulation; High-Field Magnets; no- Insulation; Nuclear Magnetic Resonance; REBCO magnets