19–24 May 2024
Music City Center
US/Central timezone

A crystal-based positron source for FCC-ee

TUPC49
21 May 2024, 16:00
2h
Country (MCC Exhibit Hall A)

Country

MCC Exhibit Hall A

Poster Presentation MC1.A21 Secondary Beams Tuesday Poster Session

Speaker

Riccardo Negrello (Istituto Nazionale di Fisica Nucleare)

Description

Positron source yield is a key factor for reaching the luminosity needed in future lepton colliders. Conventional scheme relies on a few GeV e-beam impacting on a high-density solid target to initiate an e.m. shower and collect the positrons after the target. This scheme is limited by the maximum heat load on the target before its structural failure.
An innovative approach to overcome such limitations exploits the large photon emission in axial channeling in a crystal radiator, to increase the positron yield and/or decrease the target thickness and therefore the Peak Energy Deposited Density in it. Together with the conventional scheme, our crystal-based one is under study for the FCC-ee injector design. We carried out experiments at DESY and CERN PS with high-Z crystals (W and Ir) and tuned e-beam parameters useful for FCC-ee to validate a new simulation model implemented in Geant4**. This model includes the modified photon production in channeling condition and oriented crystals in general. Capable of designing the full FCC-ee source. This new model was employed to simulate the positron source showing reduced energy deposition compared to conventional sources.

Funding Agency

INFN CSN5 and CSN1, MUR, Italian Ministry of University and Research (PRIN2022-2022Y87K7X)

Footnotes

  • https://doi.org/10.1140/epjc/s10052-022-10666-6
    ** https://doi.org/10.18429/JACoW-IPAC2019-MOPMP003
    *** https://doi.org/10.1007/s40042-023-00834-6
Region represented Europe
Paper preparation format LaTeX

Primary author

Nicola Canale (Istituto Nazionale di Fisica Nucleare)

Co-authors

Alessia Selmi (Università dell'Insubria & INFN Milano Bicocca) Dr Alexei Sytov (Istituto Nazionale di Fisica Nucleare) Andrea Mazzolari (Istituto Nazionale di Fisica Nucleare) Davide De Salvador (Univ. degli Studi di Padova) Erik Vallazza (Istituto Nazionale Fisica Nucleare, Trieste) Fahad Alharthi (Université Paris-Saclay, CNRS/IN2P3, IJCLab) Francesco Sgarbossa (Univ. degli Studi di Padova) Gianfranco Paternò (Istituto Nazionale di Fisica Nucleare) Gianluca Cavoto (Istituto Nazionale di Fisica Nucleare) Giulia Lezzani (Università dell'Insubria & INFN Milano Bicocca) Iryna Chaikovska (Université Paris-Saclay, CNRS/IN2P3, IJCLab) Laura Bandiera (Istituto Nazionale di Fisica Nucleare) Lorenzo Malagutti (Istituto Nazionale di Fisica Nucleare) Luca Bomben (Sezione INFN Milano Bicocca) Marco Romagnoni (Istituto Nazionale di Fisica Nucleare) Mattia Soldani (Istituto Nazionale di Fisica Nucleare) Michela Prest (Università dell'Insubria & INFN Milano Bicocca) Pietro Monti-Guarnieri (Università dell'Insubria & INFN Milano Bicocca) Riccardo Negrello (Istituto Nazionale di Fisica Nucleare) Robert Chehab (Laboratoire de Physique des 2 Infinis Irène Joliot-Curie) Sofia Mangiacavalli (Università dell'Insubria & INFN Milano Bicocca) Stefano Carsi (Università dell'Insubria & INFN Milano Bicocca) Valerio Mascagna (Sezione INFN Milano Bicocca) Victor Tikhomirov (Belarussian State University) Viktar Haurylavets (Institute for Nuclear Problems of Belarusian State University) Viktor Mytrochenko (National Science Centre) Vincenzo Guidi (Istituto Nazionale di Fisica Nucleare)

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