Abstract
None of the existing theoretical models can explain all the observed features of the Q-slope. In the present work, we review this problem and show how Atom Probe Tomography and Gas Cluster Ion Beam smoothing can study the basic mechanisms that may be involved. The gas cluster ion beam (GCIB) treatment method has recently been proposed as a new way to significantly reduce the surface roughness and the dark current from the rf-cavity surfaces. In addition to the suppression of the dark current, GCIB might also be an important treatment for mitigation of the Q-slope in superconducting cavities. Niobium surface treatment by cluster ion irradiation was studied based on atomistic and mesoscopic simulation methods and the surface modification dynamics results were compared to experiments.
| Original language | English |
|---|---|
| Title of host publication | ADVANCED ACCELERATOR CONCEPTS: 12th Advanced Accelerator Concepts Workshop |
| Pages | 288-296 |
| Number of pages | 9 |
| Volume | 877 |
| DOIs | |
| Publication status | Published - 2006 |
| Externally published | Yes |
| Event | ADVANCED ACCELERATOR CONCEPTS: 12th Advanced Accelerator Concepts Workshop - Lake Geneva, WI, United States Duration: Jul 10 2006 → Jul 15 2006 |
Other
| Other | ADVANCED ACCELERATOR CONCEPTS: 12th Advanced Accelerator Concepts Workshop |
|---|---|
| Country | United States |
| City | Lake Geneva, WI |
| Period | 7/10/06 → 7/15/06 |
Fingerprint
Keywords
- Gas cluster ion beam
- Q-slope
- Rf breakdown
- Surface roughness
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Materials science problems of the SCRF Q-slope. / Insepov, Z.; Norem, J.; Swenson, D. R.; Hassanein, A.
ADVANCED ACCELERATOR CONCEPTS: 12th Advanced Accelerator Concepts Workshop. Vol. 877 2006. p. 288-296.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Materials science problems of the SCRF Q-slope
AU - Insepov, Z.
AU - Norem, J.
AU - Swenson, D. R.
AU - Hassanein, A.
PY - 2006
Y1 - 2006
N2 - None of the existing theoretical models can explain all the observed features of the Q-slope. In the present work, we review this problem and show how Atom Probe Tomography and Gas Cluster Ion Beam smoothing can study the basic mechanisms that may be involved. The gas cluster ion beam (GCIB) treatment method has recently been proposed as a new way to significantly reduce the surface roughness and the dark current from the rf-cavity surfaces. In addition to the suppression of the dark current, GCIB might also be an important treatment for mitigation of the Q-slope in superconducting cavities. Niobium surface treatment by cluster ion irradiation was studied based on atomistic and mesoscopic simulation methods and the surface modification dynamics results were compared to experiments.
AB - None of the existing theoretical models can explain all the observed features of the Q-slope. In the present work, we review this problem and show how Atom Probe Tomography and Gas Cluster Ion Beam smoothing can study the basic mechanisms that may be involved. The gas cluster ion beam (GCIB) treatment method has recently been proposed as a new way to significantly reduce the surface roughness and the dark current from the rf-cavity surfaces. In addition to the suppression of the dark current, GCIB might also be an important treatment for mitigation of the Q-slope in superconducting cavities. Niobium surface treatment by cluster ion irradiation was studied based on atomistic and mesoscopic simulation methods and the surface modification dynamics results were compared to experiments.
KW - Gas cluster ion beam
KW - Q-slope
KW - Rf breakdown
KW - Surface roughness
UR - http://www.scopus.com/inward/record.url?scp=33847018458&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33847018458&partnerID=8YFLogxK
U2 - 10.1063/1.2409148
DO - 10.1063/1.2409148
M3 - Conference contribution
SN - 0735403783
SN - 9780735403789
VL - 877
SP - 288
EP - 296
BT - ADVANCED ACCELERATOR CONCEPTS: 12th Advanced Accelerator Concepts Workshop
ER -