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TUPOTK002 |
Results of the RF Power Tests of the ESS Cryomodules Tested at CEA |
1186 |
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- O. Piquet, S. Berry, A. Bouygues, E. Cenni, G. Devanz, C. Madec, C. Mayri, P. Sahuquet
CEA-DRF-IRFU, France
- C. Arcambal, Q. Bertrand, P. Bosland, T. Hamelin
CEA-IRFU, Gif-sur-Yvette, France
- M.J. Ellis
STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom
- P. Pierini
ESS, Lund, Sweden
- D. Sertore
INFN/LASA, Segrate (MI), Italy
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Eight of the medium and high beta cryomodules deliv-ered to ESS by CEA are tested at CEA before delivery; the two medium and high beta prototypes and the three first of each type of the series. The goal of these tests is to validate the assembly and the performances on few cryomodules before the next cryomodules of the series are delivered to ESS. This paper summarizes the general results obtained during the tests at 2 K and at high RF power, Pmax = 1.1 MW. The cavities reach the ESS re-quirements, Eacc = 16.7 MV/m (Medium beta) and 19.9 MV/m (High beta) with an efficient compensation of the Lorentz detuning by the piezo tuner over the full RF pulse length of 3.6 ms at 14 Hz. After the successful tests at CEA, the first cryomodules have been shipped to ESS where the final acceptance test are performed.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2022-TUPOTK002
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About • |
Received ※ 03 June 2022 — Revised ※ 14 June 2022 — Accepted ※ 17 June 2022 — Issue date ※ 21 June 2022 |
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TUPOTK020 |
Status of LASA-INFN R&D Activity on PIP-II Low-beta Prototypes |
1241 |
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- M. Bertucci, A. Bosotti, A. D’Ambros, E. Del Core, A.T. Grimaldi, P. Michelato, L. Monaco, C. Pagani, R. Paparella, D. Sertore
INFN/LASA, Segrate (MI), Italy
- A. Gresele
Zanon Research & Innovation, Schio, VI, Italy
- C. Pagani
Università degli Studi di Milano & INFN, Segrate, Italy
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LASA-INFN is developing some PIP-II β=0.61 cavity prototypes so to set up a high-Q recipe allowing to reach the PIP-II performance target in view of the series production. A single-cell cavity was treated with a XFEL-like baseline recipe, whereas a multicell cavity underwent a mid-T bake step as final surface treatment. Both cavities have been then tested at the LASA vertical experimental facility. The test results are here reported and discussed. Basing on the satisfactory results so far obtained, a strategy for the qualification and upgrade of the LASA vertical test facility is outlined.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2022-TUPOTK020
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About • |
Received ※ 08 June 2022 — Revised ※ 13 June 2022 — Accepted ※ 14 June 2022 — Issue date ※ 16 June 2022 |
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TUPOTK021 |
Recent Update on ESS Medium Beta Cavities at INFN LASA |
1245 |
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- D. Sertore, M. Bertucci, M. Bonezzi, A. Bosotti, D. Cardelli, A. D’Ambros, A.T. Grimaldi, L. Monaco, R. Paparella, G.M. Zaggia
INFN/LASA, Segrate (MI), Italy
- C. Pagani
Università degli Studi di Milano & INFN, Segrate, Italy
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The INFN LASA contribution to the European Spallation Source ERIC (European Research Infrastructure Consortium) Superconducting Linac is focused on supplying 36 cavities for the Medium Beta section of the proton accelerator. Twenty eight cavities have been fully qualified and delivered to CEA for integration into the cryomodules. We present the status of the activities dedicated to completing our contribution both by applying alternative surface treatments with respect to the series vertical BCP and by procuring new cavities.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2022-TUPOTK021
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About • |
Received ※ 09 June 2022 — Accepted ※ 15 June 2022 — Issue date ※ 25 June 2022 |
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TUPOTK022 |
INFN-LASA for the Fermilab PIP-II |
1249 |
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- R. Paparella, M. Bertucci, M. Bonezzi, A. Bosotti, D. Cardelli, A. D’Ambros, E. Del Core, A.T. Grimaldi, L. Monaco, D. Sertore, G.M. Zaggia
INFN/LASA, Segrate (MI), Italy
- C. Pagani
Università degli Studi di Milano & INFN, Segrate, Italy
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The status of INFN-LASA contribution to the PIP-II project at Fermilab is reported in this paper. Experimental results and ongoing activities on prototypes are summarized together with the development of related testing infrastructures. The series production of the 38 5-cell, beta 0.61 cavities designed by INFN-LASA for the LB650 section of the PIP-II linac recently commenced, the status of major procurements and associated activities is here below presented. All cavities will be produced and surface treated in industry to reach the unprecedented performances required, qualified through vertical cold test at qualified infrastructures and delivered as linac-ready at the string assembly site.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2022-TUPOTK022
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About • |
Received ※ 09 June 2022 — Revised ※ 10 June 2022 — Accepted ※ 16 June 2022 — Issue date ※ 04 July 2022 |
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WEPOMS042 |
The HOMEN Model: An Estimator of High Order Modes Evolution in an Energy Recovery Linac |
2342 |
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- S. Samsam, A. Bacci, V. Petrillo, M. Rossetti Conti, A.R. Rossi, M. Ruijter, L. Serafini
INFN-Milano, Milano, Italy
- A. Bosotti, R. Paparella, D. Sertore
INFN/LASA, Segrate (MI), Italy
- M.R. Masullo, A. Passarelli
INFN-Napoli, Napoli, Italy
- M. Opromolla
Università degli Studi di Milano, Milano, Italy
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Energy recovery linacs represent the new frontier of energy sustainability in the field of particle accelerators while providing remarkable performance in terms of high average current and average brightness. Operating superconducting radio-frequency cavities in continuous wave makes high repetition rates (GHz-class) affordable and allows the construction of light sources such as FEL or Compton based characterized by high flux. \ This study originates in the context of the design study of BriXSinO, an ERL based on the two-pass two-way scheme à la Maury Tigner in which the cavities are traveled by the beam in both directions, the first time in the accelerating phase and the second time in the decelerating phase. HOMEN was conceived as a model to simulate the evolution of high order modes on long time scales in high Q cavities of machines of this kind and monitor their effects on the beam.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2022-WEPOMS042
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About • |
Received ※ 08 June 2022 — Revised ※ 13 June 2022 — Accepted ※ 16 June 2022 — Issue date ※ 21 June 2022 |
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THOXSP2 |
Brixsino High-Flux Dual X-Ray and THz Radiation Source Based on Energy Recovery Linacs |
2407 |
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- I. Drebot, F. Canella, S. Cialdi, M. Giammarchi, D. Giannotti, S. Latorre, C. Meroni, M. Rossetti Conti, A.R. Rossi, M. Ruijter, S. Samsam, L. Serafini, V. Torri
INFN-Milano, Milano, Italy
- M.P. Abbracchio, S. Altilia, B. Paroli, A. Vanzulli
Universita’ degli Studi di Milano, Milano, Italy
- A. Andreone, G.P. Papari
Naples University Federico II, Napoli, Italy
- A. Bacci, M. Bertucci, A. Bosotti, F. Broggi, D. Giove, P. Michelato, L. Monaco, R. Paparella, L. Rossi, D. Sertore, M. Statera
INFN/LASA, Segrate (MI), Italy
- R. Calandrino, A. Delvecchio
HSP, Milan, Italy
- S. Capra, D. Cipriani, C. Lenardi, M. Opromolla, E. Suerra, A. Torresin
Università degli Studi di Milano, Milano, Italy
- P. Cardarelli, G. Paternò, A. Taibi
INFN-Ferrara, Ferrara, Italy
- M. Citterio
Universita’ degli Studi di Milano e INFN, Milano, Italy
- A. Esposito
LNF-INFN, Frascati, Italy
- R. Ferragut, G. Galzerano
POLIMI, Milano, Italy
- C. Koral, M.R. Masullo, A. Passarelli
INFN-Napoli, Napoli, Italy
- Z. Mazaheri, G. Mettivier, P. Russo
UniNa, Napoli, Italy
- C. Pagani
Università degli Studi di Milano & INFN, Segrate, Italy
- P. Paparo
CNR-ISASI, Pozzuoi, Italy
- V. Petrillo, F. Prelz, M. Sorbi
Universita’ degli Studi di Milano & INFN, Segrate, Italy
- B. Piccirillo, A. Rubano
Naples University Federico II and INFN, Napoli, Italy
- E. Puppin
Politecnico/Milano, Milano, Italy
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We present the conceptual design of a compact light source named BriXSinO. BriXSinO was born as demonstrator of the Marix project, but it is also a dual high flux radiation source Inverse Compton Source (ICS) of X-ray and Free-Electron Laser of THz spectral range radiation conceived for medical applications and general applied research. The accelerator is a push-pull CW-SC Energy Recovery Linac (ERL) based on superconducting cavities technology and allows to sustain MW-class beam power with almost just one hundred kW active power dissipation/consumption. ICS line produces 33 keV monochromatic X-Rays via Compton scattering of the electron beam with a laser system in Fabry-Pérot cavity at a repetition rate of 100 MHz. The THz FEL oscillator is based on an undulator imbedded in optical cavity and generates THz wavelengths from 15 to 50 micron.
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Slides THOXSP2 [19.118 MB]
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2022-THOXSP2
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About • |
Received ※ 08 June 2022 — Revised ※ 12 June 2022 — Accepted ※ 15 June 2022 — Issue date ※ 16 June 2022 |
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THPOPT025 |
Photocathode Stress Test Bench at INFN LASA |
2627 |
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- D. Sertore, D. Giove, L. Monaco
INFN/LASA, Segrate (MI), Italy
- A. Bacci, F. Canella, S. Cialdi, I. Drebot, D. Giannotti, L. Serafini
INFN-Milano, Milano, Italy
- D. Cipriani, E. Suerra
Università degli Studi di Milano, Milano, Italy
- G. Galzerano
POLIMI, Milano, Italy
- G. Guerini Rocco
Università degli Studi di Milano & INFN, Segrate, Italy
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A UHV test bench based on a 100 kV DC gun and a 100 MHz repetition rate laser has been setup up at INFN LASA to test Cs2Te photocathodes. This operation mode is the baseline of the BriXSinO project, currently in the design phase in our laboratory, and the qualification of the Cs2Te photocathodes is a key issue. In this paper, we present the recent advances in the different aspects of this R&D activity.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2022-THPOPT025
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About • |
Received ※ 10 June 2022 — Revised ※ 14 June 2022 — Accepted ※ 15 June 2022 — Issue date ※ 20 June 2022 |
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THPOPT026 |
Assembly and Characterization of Low-Energy Electron Transverse Momentum Measurement Device (TRAMM) at INFN LASA |
2630 |
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- D. Sertore, M. Bertucci, A. Bosotti, D. Giove, L. Monaco, R. Paparella
INFN/LASA, Segrate (MI), Italy
- G. Guerini Rocco, C. Pagani
Università degli Studi di Milano & INFN, Segrate, Italy
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In the framework of high-brightness electron beam generation, thermal emittance is nowadays a key parameter. While alkali tellurides are extensively used in advanced electron sources, alkali antimonides photocathodes demonstrated high QE in the visible, thus making feasible CW operations for RF-based photoinjectors. The INFN LASA laboratory in Milan is fully equipped with dedicated production systems for photocathode preparation and optical setup for QE evaluation. In this paper, we describe a newly designed device dedicated to electron transverse momentum measurement (TRAMM). It will be connected to the main production chambers and will serve as an "emittance monitoring" system during photocathode growth. From the design phase, through the parameter estimate, assembly of the components, to the installation and first measurements, we describe the status of this project and its future developments.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2022-THPOPT026
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About • |
Received ※ 09 June 2022 — Revised ※ 13 June 2022 — Accepted ※ 14 June 2022 — Issue date ※ 07 July 2022 |
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THPOPT027 |
R&D on High QE Photocathodes at INFN LASA |
2633 |
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- D. Sertore, M. Bertucci, L. Monaco
INFN/LASA, Segrate (MI), Italy
- G. Guerini Rocco
Università degli Studi di Milano & INFN, Segrate, Italy
- S.K. Mohanty, H.J. Qian, F. Stephan
DESY Zeuthen, Zeuthen, Germany
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We present the recent activities on antimonide and telluride alkali based photocathodes at INFN LASA. The R&D on Cs2Te materials is focused on investigating effects of material thickness and growth procedures on the photocathodes performances during operation in RF guns. We aim to improve thermal emittance and long term stability of these films. The more recent work on alkali antimonide showed the need for substantial improvements in stability and QE during operation. We present here our recent achievements and plans for future activities.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2022-THPOPT027
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About • |
Received ※ 09 June 2022 — Revised ※ 16 June 2022 — Accepted ※ 16 June 2022 — Issue date ※ 17 June 2022 |
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