| Title |
Calibration of X-ray Monitor during the Phase I of SuperKEKB commissioning |
| Authors |
- E. Mulyani
Sokendai, Ibaraki, Japan
- J.W. Flanagan
KEK, Ibaraki, Japan
|
| Abstract |
X-ray monitors (XRM) have been installed in each SuperKEKB ring, the Low Energy Ring (LER) and High Energy Ring (HER), primarily for vertical beam size measurement. Both rings have been commissioned in Phase I of SuperKEKB operation (February-June 2016), and several XRM calibration studies have been carried out. The geometrical scale factors seems to be well understood for both LER and HER. The emittance knob ratio method yielded results consistent with expectations based on the machine model optics (vertical emittance ε_{y} is {§I{≈8}{pm}}). For the HER, the vertical emittance ε_{y} is {§I{≈41}{pm}}, which is 4× greater than the optics model expectation. Analysis of beam size and lifetime measurements suggests unexpectedly large point response functions, particularly in the HER.
|
| Paper |
download TUPG72.PDF [7.257 MB / 4 pages] |
| Poster |
download TUPG72_POSTER.PDF [34.615 MB] |
| Conference |
IBIC2016, Barcelona, Spain |
| Series |
International Beam Instrumentation Conference (5th) |
| Proceedings |
Link to full IBIC2016 Proccedings |
| Session |
Tuesday Poster Session |
| Date |
13-Sep-16 16:00–18:00 |
| Main Classification |
Transverse Profile Monitors |
| Keywords |
emittance, factory, detector, scattering, optics |
| Publisher |
JACoW, Geneva, Switzerland |
| Editors |
Isidre Costa (ALBA-CELLS, Barcelona, Spain); Ubaldo Iriso (ALBA-CELLS, Barcelona, Spain); Francis Pérez (ALBA-CELLS, Barcelona, Spain); Volker RW Schaa (GSI, Darmstadt, Germany) |
| ISBN |
978-3-95450-177-9 |
| Published |
February 2017 |
| Copyright |
|
