| Title |
Target Studies for the FCC-ee Positron Source |
| Authors |
- F. Alharthi, I. Chaikovska, R. Chehab, S. Ogur, A. Ushakov, S. Wallon
Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
- L. Bandiera, A. Mazzolari, M. Romagnoni, A.I. Sytov
INFN-Ferrara, Ferrara, Italy
- J. Diefenbach, W. Lauth
IKP, Mainz, Germany
- O. Khomyshyn
Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
- D.M. Klekots
National Taras Shevchenko University of Kyiv, The Faculty of Physics, Kyiv, Ukraine
- V.V. Mytrochenko
NSC/KIPT, Kharkov, Ukraine
- P. Sievers, Y. Zhaopresenter
CERN, Meyrin, Switzerland
- M. Soldani
Università degli Studi di Ferrara, Ferrara, Italy
|
| Abstract |
FCC-ee injector study foresees 3.5~nC electron and positron bunches with 200 Hz repetition and 2 bunches per linac pulse at 6~GeV extraction energy. Regarding the possible options of positron production, we retain both of the conventional amorphous target and the hybrid target options. The hybrid scheme uses an intense photon production by 6 GeV electrons impinging on a crystal oriented along a lattice axis. In such a way, it involves two targets: a crystal as a photon radiator and an amorphous target-converter. Therefore, to avoid early failure or damage of the target, the candidate materials for the crystal and conversion targets have started to be tested by using the intense electron beam at Mainzer Mikrotron in Germany by the end of 2021. By manipulating the beam intensity, focusing, and chopping, a Peak Energy Deposition Density in the tested targets could be achieved close to that generated by the electron/photon beam in the FCC-ee positron target. Radiation-damage studies of the crystal sample have been also performed allowing estimating the effect on the photon enhancement used in the hybrid positron source.
|
| Paper |
download WEPOPT054.PDF [2.400 MB / 4 pages] |
| Cite |
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| Conference |
IPAC2022 |
| Series |
International Particle Accelerator Conference (13th) |
| Location |
Bangkok, Thailand |
| Date |
12-17 June 2022 |
| Publisher |
JACoW Publishing, Geneva, Switzerland |
| Editorial Board |
Frank Zimmermann (CERN, Meyrin, Switzerland); Hitoshi Tanaka (RIKEN, Hyogo, Japan); Porntip Sudmuang (SRLI, Nakhon, Thailand); Prapong Klysubun (SRLI, Nakhon, Thailand); Prapaiwan Sunwong (SRLI, Nakhon, Thailand); Thakonwat Chanwattana (SRLI, Nakhon, Thailand); Christine Petit-Jean-Genaz (CERN, Meyrin, Switzerland); Volker R.W. Schaa (GSI, Darmstadt, Germany) |
| Online ISBN |
978-3-95450-227-1 |
| Online ISSN |
2673-5490 |
| Received |
16 June 2022 |
| Revised |
16 June 2022 |
| Accepted |
17 June 2022 |
| Issue Date |
21 June 2022 |
| DOI |
doi:10.18429/JACoW-IPAC2022-WEPOPT054 |
| Pages |
1979-1982 |
| Copyright |
 Published by JACoW Publishing under the terms of the Creative Commons Attribution 3.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI. |
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