Paper |
Title |
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MOPAB064 |
Photoinjector Emittance Measurement at STAR |
257 |
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- A. Bacci, C. Curatolo, I. Drebot, L. Serafini, V. Torri
Istituto Nazionale di Fisica Nucleare, Milano, Italy
- R.G. Agostino, R. Barberi, V. Formoso, M. Ghedini, F. Martire, C. Pace
UNICAL, Arcavacata di Rende, Italy
- D. Alesini, M. Bellaveglia, J.J. Beltrano, F.G. Bisesto, G. Borgese, B. Buonomo, G. Di Pirro, G. Di Raddo, A. Esposito, A. Gallo, A. Ghigo, F. Iungo, A. Papa, L. Pellegrino, A. Stella, C. Vaccarezza, S. Vescovi
INFN/LNF, Frascati (Roma), Italy
- A. Cianchi
Università di Roma II Tor Vergata, Roma, Italy
- G. D'Auria, A. Fabris, M. Marazzi
Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
- V. Petrillo
Universita' degli Studi di Milano, Milano, Italy
- A. Policicchio
UniCal & INFN CS, Arcavacata di Rende (CS), Italy
- E. Puppin
Politecnico/Milano, Milano, Italy
- M. Rossetti Conti
Universita' degli Studi di Milano & INFN, Milano, Italy
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STAR is an advanced Thomson source of monochromatic and tunable, ps-long, polarised X-ray beams in the 40-140 keV range. The commissioning has started at the Univ. of Calabria (Italy). The light source is driven by a high-brightness, low-emittance electron beam produced in a LINAC allowing for the source tunability and spectral density. This note reports on an emittance measurement schema based on the insertion of a slit mask in the vacuum chamber dedicated to the photocathode laser entrance. Results of the simulation of the measurement technique are reported, and the use of the data for the optimisation of the accelerator performance are detailed. The experimental setup and the application developed in EPICS for image recording and analysis are also described.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2017-MOPAB064
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MOPAB065 |
Breit-Wheeler Scattering Events Produced by Two Interacting Compton Sources |
261 |
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- I. Drebot, L. Serafini
Istituto Nazionale di Fisica Nucleare, Milano, Italy
- D. Micieli, E. Tassi
UNICAL, Arcavacata di Rende, Italy
- E. Milotti
INFN-Trieste, Trieste, Italy
- V. Petrillo
Universita' degli Studi di Milano & INFN, Milano, Italy
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We present the dimensioning of a photon-photon collider based on conventional Compton gamma sources for the observation of Breit-Wheeler pair production and QED gamma-gamma generation. Two symmetric electron beams, generated by photocathodes and accelerated in linacs, produce two primary gamma rays through Compton back-scattering with two high-energy lasers. Tuning the system energy above the Breit-Wheeler cross section threshold, a flux of secondary electrons and positrons is generated. The process is analyzed by start-to-end simulations. The Monte Carlo code 'Rate Of Scattering Events' (ROSE) has been developed ad hoc for the counting of the QED events. Realistic numbers of the secondary particles yield, referring to existing or approved set-ups, a discussion of the feasibility of the experiment and the evaluation of the background are presented.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2017-MOPAB065
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MOPVA016 |
ELI-NP GBS Status |
880 |
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- A. Giribono, M. Marongiu, A. Mostacci, V. Pettinacci
INFN-Roma, Roma, Italy
- S. Albergo
INFN-CT, Catania, Italy
- D. Alesini, M. Bellaveglia, B. Buonomo, F. Cioeta, E. Di Pasquale, G. Di Pirro, A. Esposito, A. Falone, G. Franzini, O. Frasciello, A. Gallo, S. Guiducci, S. Incremona, F. Iungo, V.L. Lollo, L. Pellegrino, L. Piersanti, S. Pioli, R. Ricci, U. Rotundo, L. Sabbatini, A. Stella, S. Tomassini, C. Vaccarezza, A. Variola
INFN/LNF, Frascati (Roma), Italy
- A. Bacci, C. Curatolo, I. Drebot, V. Petrillo, A.R. Rossi, L. Serafini
Istituto Nazionale di Fisica Nucleare, Milano, Italy
- N. Bliss, C. Hill
STFC/DL, Daresbury, Warrington, Cheshire, United Kingdom
- G. Campogiani
Rome University La Sapienza, Roma, Italy
- P. Cardarelli, M. Gambaccini
INFN-Ferrara, Ferrara, Italy
- F. Cardelli, A. Mostacci, L. Palumbo, A. Vannozzi
University of Rome La Sapienza, Rome, Italy
- F. Cardelli, L. Palumbo
INFN-Roma1, Rome, Italy
- K. Cassou, K. Dupraz, A. Martens, C.F. Ndiaye, Z.F. Zomer
LAL, Orsay, France
- G. D'Auria
Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
- L. Sabato
U. Sannio, Benevento, Italy
- M. Veltri
INFN-FI, Sesto Fiorentino, Italy
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New generation of Compton sources are developing in different countries to take advantage of the photon energy amplification given by the Compton backscattering effect. In this framework the Eurogammas international collaboration is producing a very high brilliance gamma source for the Nuclear Pillar of the Exterme Light Infrastructure program (ELI). At present there is a lot of effort in the mass production of all the components and in the developments and tests of the different high technology devices that will operate in the gammas beam source, like the optical recirculator and the high gradient - high average current warm C band accelerating sections. In this paper we will provide a general overview of the GBS status and of the perspectives for the future integration phase.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2017-MOPVA016
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