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1. High intensity proton beam impact at 440 GeV/c on Mo and Cu coated CfC/graphite and SiC/SiC absorbers for beam intercepting devices

Author

Maestre, Jorge, Bahamonde, Cristina, Garcia, Inigo Lamas, Kershaw, Keith, Biancacci, Nicolo, Busom, Josep, Frankl, Matthias, Lechner, Anton, Kurtulus, Adnan, Makimura, Shunsuke, Nakazato, Naofumi, Perez, Ana Teresa, Perillo-Marcone, Antonio, Salvant, Benoit, Seidenbinder, Regis, Teofili, Lorenzo, and Calviani, Marco

Subjects
Physics - Accelerator Physics, Physics - Instrumentation and Detectors
Abstract

Beam Intercepting Devices (BIDs) are essential protection elements for the operation of the Large Hadron Collider (LHC) complex. The LHC internal beam dump (LHC Target Dump Injection or LHC TDI) is the main protection BID of the LHC injection system; its main function is to protect LHC equipment in the event of a malfunction of the injection kicker magnets during beam transfer from the SPS to the LHC. Several issues with the TDI were encountered during LHC operation, most of them due to outgassing from its core components induced by electron cloud effects, which led to limitations of the injector intensity and hence had an impact on LHC availability. The absorbing cores of the TDIs, and of beam intercepting devices in general, need to deal with high thermo-mechanical loads induced by the high intensity particle beams. In addition, devices such as the TDI - where the absorbing materials are installed close to the beam, are important contributors to the accelerator impedance budget. To reduce impedance, the absorbing materials that make up the core must be typically coated with high electrical conductivity metals. Beam impact testing of the coated absorbers is a crucial element of development work to ensure their correct operation. The behaviour of several metal-coated absorber materials was investigated when exposed to high intensity and high energy proton beams in the HiRadMat facility at CERN. Different coating configurations based on copper and molybdenum, and absorbing materials such as isostatic graphite, Carbon Fibre Composite (CfC) and Silicon Carbide reinforced with Silicon Carbide fibres (SiC-SiC), were tested in the facility to assess the TDI's performance and to extract information for other BIDs using these materials. In addition to beam impact tests and an extensive Post Irradiation Examination (PIE) campaign, extensive numerical simulations were carried out., Comment: 32 pages, 25 figures, accepted for publication in Journal of Instrumentation (JINST)

Published
2021
Full Text
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3. Annual Report 2022

Author

Aglieri, Gianluca, Aleksa, Martin, Feito, Diego Alvarez, Carballo, Aitor Amatriain, Andorno, Marco, Angeletti, Massimo, Antoszczuk, Pablo, Zarate, Fernando Aretio, Tortajada, I. Asensi, Auffray, Etiennette, Ballabriga, Rafael, Balutto, Mattia, Bandi, Franco, Higueras, Maria Barba, Barney, David, Baron, Sophie, Baszczyk, Mateusz Karol, Bialas, Wojciech, Biereigel, Stefan, Blomer, Jakob, Bordelius, Aleksandar, Borghello, G., Bouvier, Philippe, Boyer, Francois, Braach, Justus, De Souza Mendes, Eduardo Brandao, Brondolin, Erica, Brunbauer, Florian, Buschmann, Eric, Buytaert, Jan, Byczynski, Wiktor, Cala', Roberto, Campbell, Michael, Caratelli, Alessandro, Carnesecchi, Ricardo, Catinaccio, Andrea, Cecconi, Leonardo, Ceresa, Davide, Lemos, Edgar Cid, Coco, Victor, Collins, Paula, Contiero, Luca, Arena, Maria Cristina, Cure, Benoit, Rivera, Esteban Curras, Dachs, Florian, Dall'Omo, Frederik, D'Ambrosio, Carmelo, Dannheim, Dominik, Dao, Valerio, De Melo, Joao, De Oliveira, Rui, Deng, Wenjing, Detraz, Stephane, Dhaliwal, Jashandeep, Di Castro, Mario, Di Mauro, Antonello, Dias, Matheo, Dobrijevic, Dominik, Martin, Ana Dorda, Dorosz, Piotr, Dort, Katharina, Dudarev, Alexey, Dumps, Raphael, Emiliani, Simone, Faccio, Federico, Francois, Brieuc, Bulling, Anthony Frederick, Frei, Christoph, Gabrielli, Andrea, Gargiulo, Corrado, Gessinger-Befurt, Paul, Gkougkousis, Vagelis, Gluchowska, Weronika, Gose, Melwin, Guida, Roberto, Gustavino, Carlo, Haimberger, Jakob, Halvorsen, Marius, Hasenbichler, Jan, Hawkings, Richard, Hong, Geun Hee, Hegner, Benedikt, Hellenschmidt, Desiree, Heribi, Quassim, Hillemans, Hartmut, Himmerlich, Anja, Ijzermans, Pieter, Jaekel, Martin, Jakobsen, Sune, Jama, Kacper, Janot, Patrick, Janssens, Djunes, Floethner, Karl Jonathan, Joram, Christian, Junique, Antoine, Jurco, Robert, Kaplon, Jan, Keizer, Floris, Kiehn, Moritz, Klekotko, Adam, Kloukinas, Kostas, Kluge, Alex, Krammer, Manfred, Kratochwil, Nicolaus, Kremastiotis, Iraklis, Kucharska, Gabriela, Kugathasan, Thanushan, Kühn, Susanne, Kulis, Szymon, La Rosa, Alessandro, Lalovic, Milana, Laudi, Elisa, Le Blanc, M., Ledey, Gael, Miotto, Giovanna Lehmann, Lemoine, Corentin, Linssen, Lucie, Lisowska, Marta, Gomez, Javier Lopez, Mager, Magnus, Malentacca, Lorenzo, Mandelli, Beatrice, Manolescu, Florentian, Martina, Francesco, Martinazzoli, Loris, Martinengo, Paolo, Vila, Pere Mato, Maulerova, Vendula, Mazzei, Francesco, McAlpine, Lee, Mehl, Bertrand, Mentink, Matthias, Michelis, Stephano, Carceller, Juan Miguel, Leitao, Pedro Miguel Vicente, Mlynarikova, Michaela, Moll, Michael, Moneta, Lorenzo, Muller, Hans, Musa, Luciano, Bandi, Franco Nahuel, Nauman, Axel, Nookala, Anvesh, Olantera, Lauri, Oliveri, Eraldo, Orlandini, Giorgio, Pacifico, Nicola, Padulano, Vincenzo, Pandey, Awanish, Pantaleo, Felice, Pape, Sebastian, Pejasinovic, Risto, Pernegger, Heinz, Petagna, Paolo, Piedigrossi, Didier, Diaz, Francisco Piernas, Piller, Markus, Piro, Francesco, Pizzichemi, Marco, Pizzirusso, Olivier, Poblocki, Marcin, Prousalidi, Thenia, Rebane, Karolina, Reichenbach, Leonhard, Reidt, Felix, Rembser, Christoph, Riedler, Petra, Riegler, Werner, Rigoletti, Gianluca, Moreira, Paulo Rodrigues Simoes, Rodrigues, Alexis, Roloff, Philipp, Ropelewski, Leszek, Rovere, Marco, Sailer, André, Salamani, Dalila, Salomoni, Matteo, Salzburger, Andreas, Sanna, Isabella, Sasikumar, Swathi, Sauli, Fabio, Scarcella, Carmelo, Scharenberg, Lucian, Schindler, Heinrich, Schmidt, Burkhard, Schmidt, Janis, Schneider, Thomas, Schopper, Andreas, Secouet, Pascal, Sharma, Abhishek, Sicking, Eva, Sigaud, Christophe, Singh, Shuvay, Sirskaran, Viros, Snoeys, Walter, Solans, Carlos, Gonzalez, Maria Soledad Molina, Soos, Csaba, Stewart, Graeme A., Suljic, Miljenko, Svhira, Peter, Teixeira, Antonio, Teofili, Lorenzo, Termo, Gennaro, Troska, Jan, Utrobicic, Antonija, Van Beelen, Jacob, Van Rijnbach, Milou, Van Stenis, Miranda, Vasey, Francois, Vaskuri, Anna, Nunez, Marcos Vazquez, Veenhof, Rob, Verzeroli, Mattia, Pinto, Mateus Vicente Barreto, Leitao, Pedro Vicente, Volker, Alexander, Volkl, Valentin, Wanotayaroj, Chaowaroj, Weick, Julian, Wiehe, Moritz, Wilkens, Henric, and Zaborowska, Anna

Abstract

This report summarises the activities and main achievements of the CERN strategic R&D programme on technologies for future experiments during the year 2022

Published
2023

4. Extension of the R&D Programme on Technologies for Future Experiments

Author

Joram, Christian, Aglieri, Gianluca, Aleksa, Martin, Feito, Diego Alvarez, Carballo, Aitor Amatriain, Andorno, Marco, Angeletti, Massimo, Antoszczuk, Pablo, Zarate, Fernando Aretio, Tortajada, I. Asensi, Auffray, Etiennette, Ballabriga, Rafael, Balutto, Mattia, Bandi, Franco, Higueras, Maria Barba, Barney, David, Baron, Sophie, Baszczyk, Mateusz Karol, Bialas, Wojciech, Biereigel, Stefan, Blomer, Jakob, Bordelius, Aleksandar, Borghello, G., Bouvier, Philippe, Boyer, Francois, Braach, Justus, De Souza Mendes, Eduardo Brandao, Brondolin, Erica, Brunbauer, Florian, Buschmann, Eric, Buytaert, Jan, Byczynski, Wiktor, Cala', Roberto, Campbell, Michael, Caratelli, Alessandro, Carnesecchi, Ricardo, Catinaccio, Andrea, Cecconi, Leonardo, Ceresa, Davide, Lemos, Edgar Cid, Coco, Victor, Collins, Paula, Contiero, Luca, Arena, Maria Cristina, Cure, Benoit, Rivera, Esteban Curras, Dachs, Florian, Dall'Omo, Frederik, D'Ambrosio, Carmelo, Dannheim, Dominik, Dao, Valerio, De Melo, Joao, De Oliveira, Rui, Deng, Wenjing, Detraz, Stephane, Dhaliwal, Jashandeep, Di Castro, Mario, Di Mauro, Antonello, Dias, Matheo, Dobrijevic, Dominik, Martin, Ana Dorda, Dorosz, Piotr, Dort, Katharina, Dudarev, Alexey, Dumps, Raphael, Emiliani, Simone, Faccio, Federico, Francois, Brieuc, Bulling, Anthony Frederick, Frei, Christoph, Gabrielli, Andrea, Gargiulo, Corrado, Gessinger-Befurt, Paul, Gkougkousis, Vagelis, Gluchowska, Weronika, Gose, Melwin, Guida, Roberto, Gustavino, Carlo, Haimberger, Jakob, Halvorsen, Marius, Hasenbichler, Jan, Hawkings, Richard, Hong, Geun Hee, Hegner, Benedikt, Hellenschmidt, Desiree, Heribi, Quassim, Hillemans, Hartmut, Himmerlich, Anja, Ijzermans, Pieter, Jaekel, Martin, Jakobsen, Sune, Jama, Kacper, Janot, Patrick, Janssens, Djunes, Floethner, Karl Jonathan, Junique, Antoine, Jurco, Robert, Kaplon, Jan, Keizer, Floris, Kiehn, Moritz, Klekotko, Adam, Kloukinas, Kostas, Kluge, Alex, Krammer, Manfred, Kratochwil, Nicolaus, Kremastiotis, Iraklis, Kucharska, Gabriela, Kugathasan, Thanushan, Kühn, Susanne, Kulis, Szymon, La Rosa, Alessandro, Lalovic, Milana, Laudi, Elisa, Le Blanc, M., Ledey, Gael, Miotto, Giovanna Lehmann, Lemoine, Corentin, Linssen, Lucie, Lisowska, Marta, Gomez, Javier Lopez, Mager, Magnus, Malentacca, Lorenzo, Mandelli, Beatrice, Manolescu, Florentian, Martina, Francesco, Martinazzoli, Loris, Martinengo, Paolo, Vila, Pere Mato, Maulerova, Vendula, Mazzei, Francesco, McAlpine, Lee, Mehl, Bertrand, Mentink, Matthias, Michelis, Stephano, Carceller, Juan Miguel, Leitao, Pedro Miguel Vicente, Mlynarikova, Michaela, Moll, Michael, Moneta, Lorenzo, Muller, Hans, Musa, Luciano, Bandi, Franco Nahuel, Nauman, Axel, Nookala, Anvesh, Olantera, Lauri, Oliveri, Eraldo, Orlandini, Giorgio, Pacifico, Nicola, Padulano, Vincenzo, Pandey, Awanish, Pantaleo, Felice, Pape, Sebastian, Pejasinovic, Risto, Pernegger, Heinz, Petagna, Paolo, Piedigrossi, Didier, Diaz, Francisco Piernas, Piller, Markus, Piro, Francesco, Pizzichemi, Marco, Pizzirusso, Olivier, Poblocki, Marcin, Prousalidi, Thenia, Rebane, Karolina, Reichenbach, Leonhard, Reidt, Felix, Rembser, Christoph, Riedler, Petra, Riegler, Werner, Rigoletti, Gianluca, Moreira, Paulo Rodrigues Simoes, Rodrigues, Alexis, Roloff, Philipp, Ropelewski, Leszek, Rovere, Marco, Sailer, André, Salamani, Dalila, Salomoni, Matteo, Salzburger, Andreas, Sanna, Isabella, Sasikumar, Swathi, Sauli, Fabio, Scarcella, Carmelo, Scharenberg, Lucian, Schindler, Heinrich, Schmidt, Burkhard, Schmidt, Janis, Schneider, Thomas, Schopper, Andreas, Secouet, Pascal, Sharma, Abhishek, Sicking, Eva, Sigaud, Christophe, Singh, Shuvay, Sirskaran, Viros, Snoeys, Walter, Solans, Carlos, Gonzalez, Maria Soledad Molina, Soos, Csaba, Stewart, Graeme A., Suljic, Miljenko, Svhira, Peter, Teixeira, Antonio, Teofili, Lorenzo, Termo, Gennaro, Troska, Jan, Utrobicic, Antonija, Van Beelen, Jacob, Van Rijnbach, Milou, Van Stenis, Miranda, Vasey, Francois, Vaskuri, Anna, Nunez, Marcos Vazquez, Veenhof, Rob, Verzeroli, Mattia, Pinto, Mateus Vicente Barreto, Leitao, Pedro Vicente, Volker, Alexander, Volkl, Valentin, Wanotayaroj, Chaowaroj, Weick, Julian, Wiehe, Moritz, Wilkens, Henric, and Zaborowska, Anna

Abstract

we have conceived an extension of the R&D programme covering the period 2024 to 2028, i.e. again a 5-year period, however with 2024 as overlap year. This step was encouraged by the success of the current programme but also by the Europe-wide efforts to launch new Detector R&D collaborations in the framework of the ECFA Detector R&D Roadmap. We propose to continue our R&D programme with the main activities in essentially the same areas. All activities are fully aligned with the ECFA Roadmap and in most cases will be carried out under the umbrella of one of the new DRD collaborations. The program is a mix of natural continuations of the current activities and a couple of very innovative new developments, such as a radiation hard embedded FPGA implemented in an ASIC based on System-on-Chip technology. A special and urgent topic is the fabrication of Al-reinforced super-conducting cables. Such cables are a core ingredient of any new superconducting magnet such as BabyIAXO, PANDA, EIC, ALICE-3 etc. Production volumes are small and demands come in irregular intervals. Industry (world-wide) is no longer able and willing to fabricate such cables. The most effective approach (technically and financially) may be to re-invent the process at CERN, together with interested partners, and offer this service to the community.

Published
2023

5. Strategic R&D Programme on Technologies for Future Experiments - Annual Report 2021

Author

Aglieri Rinella, Gianluca, Aleksa,Martin, Alvarez Feito,Diego, Andorno,Marco, Angeletti,Massimo, Antoszczuk,Pablo, Asensi Tortajada,I., Auffray Hillemanns, Etiennette, Ballabriga,Raphael, Balutto,Mattia, Bandi,Franco, Barba Higueras,Maria, Barney,David, Baron,Sophie, Barreto Pinto,Mateus, Bastian Van Beelen,Jacob, Baszczyk,Mateusz Karol, Beguin,Marina, Bialas,W., Biereigel,Stefan, Blomer,Jakob, Borghello,G., Braach,Justus, Brandao De Souza Mendes,Eduardo, Brondolin,Erica, Brunbauer,Florian, Buschmann,Eric, Buytaert,Jan, Byczynski,Wiktor, Cala',Roberto, Cambie,Federico, Campbell,Michael, Caratelli,Alessandro, Carnesecchi,F., Catinaccio,Andrea, Cecconi,Leonardo, Ceresa,Davide, Cid Lemos,Edgar, Coco,Victor, Collins,Paula, Contiero,Luca, Corbetta,Mara, Cure,Benoit, Curras Rivera,Esteban, Dachs,Florian, Dall'Omo,Frederik, D'Ambrosio,Carmelo, Dannheim,Dominik, Dao,V., De Melo,Joao, De Oliveira,Rui, Deng,W., Deng,Wenjing, Detraz,Stephane, Di Mauro,Antonello, Dias,Matheo, Dobrijevic,D., Dobrijevic,Dominik, Dorda Martin,A., Dorda Martin,Ana, Dorosz,P., Dort,Katharina, Dudarev,Alexey, Dumps,Raphael, Faccio,Federico, Fernandez Declara,Placido, Fiorenza,Gabriele, Francois,Brieuc, Frederick Bulling ,Anthony, Frei,Christoph, Gabrielli,A., Gargiulo,Corrado, Gessinger-Befurt,Paul, Gkougkousis,Vagelis, Gluchowska,Weronika, Gose,Melwin, Guida,Roberto, Gustavino,C., Haimberger,Jakob, Halvorsen,Marius, Hasenbichler,J., Hawkings,Richard, Hee Hong,Geun, Hellenschmidt,Desiree, Heribi,Quassim, Hillemans,H., Himmerlich,Anja, Ijzermans,Pieter, Janot,Patrick, Janssens,Djunes, Jonathan Floethner ,Karl, Joram,Christian, Kaplon,Jan, Keizer,Floris, Kiehn,Moritz, Klekotko,Adam, Kloukinas,Kostas, Kluge,Alex, Krammer,Manfred, Kratochwil,Nicolaus, Kremastiotis, Iraklis, Kroeger,Jens, Kugathasan,T., La Rosa,Alessandro, Lafuente,Antonio, Lalovic,Milana, Laudi,Elisa, Le Blanc,M., Ledey,Gael, Leitao,M., Linssen,Lucie, Lisowska,Marta, Lopez Gomez,Javier, Maciej Malinowski,Filip, Magatti,Demetrio, Mager,Magnus, Mandelli,Beatrice, Martinazzoli,Loris, Martinengo,Paolo, Mato Vila,Pere, Maulerova,Vendula, Mehl,Bertrand, Mentink,Matthias, Moll,Michael, Muller,Hans, Musa,Luciano, Neroni,Michela, Olantera ,Lauri, Oliveri,Eraldo, Orlandini,Giorgio, Padulano,Vincenzo, Pantaleo,Felice, Pape,Sebastian, Pejasinovic,Risto, Pernegger,Heinz, Petagna,Paolo, Piedigrossi,Didier, Piernas Diaz,Francisco, Piller,Markus, Piro,Francesco, Pizzichemi, Marco, Pizzirusso,Olivier, Prousalidi ,Thenia, Rebane,K., Reidt,F., Rembser,Christoph, Riedler,Petra, Riegler,Werner, Rigoletti,Gianluca, Rodrigues Simoes Moreira,Paulo, Roloff, Philipp Gerhard, Ropelewski,Leszek, Rovere,Marco, Sailer,André, Salamani,Dalila, Salomoni,Matteo, Salzburger,Andreas, Sanna,I., Scarcella ,Carmelo, Scharenberg,Lucian, Schindler,Heinrich, Schmidt,Burkhard, Schmidt,Janis, Schneider,Thomas, Schopper,Andreas, Secouet,Pascal, Sharma,A., Singh,Shuvay, Sirskaran,Viros, Snoeys,Walter, Solans,Carlos, Soledad Molina Gonzalez,Maria, Soos,Csaba, Stewart,Graeme A, Suljic,M., Svhira,Peter, Teixeira,Antonio, Teofili,Lorenzo, Termo,Gennaro, Troska,Jan, Utrobicic,Antonija, Van Rijnbach,Milou, Van Stenis,Miranda, Vasey,Francois, Vaskuri,Anna, Veenhof,Rob, Verzeroli,Mattia, Vicente Leitao,Pedro, Vicente,M., Volkl,Valentin, Wanotayaroj,Chaowaroj, Weick,Julian, Wiehe,Moritz, and Zaborowska,Anna

Abstract

This report summarises the activities and main achievements of the CERN strategic R&D programme on technologies for future experiments during the year 2021.

Published
2022

6. A Thermomechanical and Electromagnetic Approach For The Design Of High-Intensity Accelerator Components

Author

Teofili, Lorenzo

Subjects
Engineering, Physics::Accelerator Physics, Accelerators and Storage Rings
Abstract

At the European Council for Nuclear Research (CERN) two projects call for an upgrade of the laboratory particle accelerators to find new physics results: the High-Luminosity Large Hadron Collider (HL-LHC) and the LHC Injection Upgrade (LIU). In this context, beam characteristics such as intensity and stored energy will be doubled. Some of the current accelerator components cannot safely perform their main tasks with these new conditions. As an example, it was demonstrated that the majority of the devices responsible for partially or totally absorbing the beam, the so-called beam intercepting devices (BIDs), have to be redesigned to face the new challenging scenario. These devices, because of their specific functional requirements, usually, have strong electromagnetic interaction with the beam, i.e. high impedance. They are among the strongest impedance sources in the CERN accelerators. Devices with high impedance could generate beam instabilities or they could be overheated because of RF-heating. Thus, at CERN, an impedance minimization campaign for the new BIDs was started, and this thesis reports the results of the campaign. In particular, the manuscript analyzes the impedance of LIU and HL-LHC devices via simulations and measurements. It defines a series of guidelines for minimizing the device impedance and shows examples of the successful application of these guidelines. Furthermore, the impedance induced heating thermo-mechanical effects are also discussed, a new method to simulate them is developed and successfully benchmarked against experimental data. Finally, the manuscript tackles the problem of determining the wakefield and the impedance induced heating of two counterrotating beams passing in the same vacuum chamber. On this topic, some extensions to the present theory are reported.

Published
2020

7. Strategic R&D Programme on Technologies for Future Experiments - Annual Report 2020

Author

Aglieri, Gianluca, Aleksa, Martin, Feito, Diego Alvarez, Angeletti, Massimo, Antoszczuk, Pablo, Ballabriga, Rafael, Balutto, Mattia, Higueras, Maria Barba, Barney, David, Baron, Sophie, Pinto, Mateus Barreto, Van Beelen, Jacob Bastian, Baszczyk, Mateusz Karol, Beguin, Marina, Biereigel, Stefan, Blomer, Jakob, De Souza Mendes, Eduardo Brandao, Brondolin, Erica, Brunbauer, Florian, Buschmann, Eric, Buytaert, Jan, Cala', Roberto, Campbell, Michael, Catinaccio, Andrea, Cecconi, Leonardo, Ceresa, Davide, Lemos, Edgar Cid, Coco, Victor, Collins, Paula, Corbetta, Mara, Cure, Benoit, Dachs, Florian, D'Ambrosio, Carmelo, Dannheim, Dominik, De Melo, Joao, De Oliveira, Rui, Deng, Wenjing, Detraz, Stephane, Dias, Matheo, Dobrijevic, Dominik, Martin, Ana Dorda, Dort, Katharina, Dumps, Raphael, Faccio, Federico, Declara, Placido Fernandez, Fiorenza, Gabriele, Forty, Roger, Francois, Brieuc, Bulling, Anthony Frederick, Gargiulo, Corrado, Gessinger-Befurt, Paul, Gkougkousis, Vagelis, Gose, Melwin, Guida, Roberto, Hahnfeld, Jonas, Haimberger, Jakob, Halvorsen, Marius, Hong, Geun Hee, Hellenschmidt, Desiree, Ijzermans, Pieter, Janot, Patrick, Janssens, Djunes, Williams, Morag Jean, Joram, Christian, Kiehn, Moritz, Klekotko, Adam, Kloukinas, Kostas, Kluge, Alex, Krammer, Manfred, Kroeger, Jens, Lafuente, Antonio, Lalovic, Milana, Laudi, Elisa, Ledey, Gael, Linssen, Lucie, Lisowska, Marta, Gomez, Javier Lopez, Malinowski, Filip Maciej, Magatti, Demetrio, Mandelli, Beatrice, Martinazzoli, Loris, Vila, Pere Mato, Maulerova, Vendula, Mentink, Matthias, Gonzalez, Maria Molina, Moll, Michael, Muller, Hans, Munker, Magdalena, Musa, Luciano, Neroni, Michela, Olantera, Lauri, Oliveri, Eraldo, Padulano, Vincenzo, Pejasinovic, Risto, Pernegger, Heinz, Petagna, Paolo, Piro, Francesco, Pizzirusso, Olivier, Prousalidi, Thenia, Quast, Thorben, Rembser, Christoph, Riedler, Petra, Riegler, Werner, Rigoletti, Gianluca, Rivera, Esteban Curras, Moreira, Paulo Rodrigues Simoes, Ropelewski, Leszek, Salamani, Dalila, Salomoni, Matteo, Scarcella, Carmelo, Scharenberg, Lucian, Schindler, Heinrich, Schmidt, Burkhard, Schneider, Thomas, Schopper, Andreas, Secouet, Pascal, Singh, Shuvay, Snoeys, Walter, Soos, Csaba, Stewart, Graeme, Teixeira, Antonio, Teofili, Lorenzo, Termo, Gennaro, Troska, Jan, Utrobicic, Antonija, Van Stenis, Miranda, Vanat, Tomas, Vasey, Francois, Veenhof, Rob, Leitao, Pedro Vicente, Vicente, Mateus, Volkl, Valentin, Wanotayaroj, Chaowaroj, Wiehe, Moritz, Wunsch, Stefan, Auffray-Hillemanns, Etiennette, Borghello, Giulio, Michelis, Stefano, Pantaleo, Felice, Pizzichemi, Marco, Ripamonti, Giacomo, Roloff, Philipp, Rovere, Marco, Sailer, André, and Salzburger, Andreas

Abstract

This report summarises the activities and achievements of the strategic R&D programme on technologies for future experiments in the year 2020.

Published
2020

8. Beam-induced heat loads on the LHC arc beam screens with different beam and machine configurations: experiments and comparison against simulations

Author

Iadarola, Giovanni, Skripka, Galina, Albert, Markus, Amorim, David, Andujar, Oscar, Antipov, Sergey, Arduini, Gianluigi, Argyropoulos, Theodoros, Bradu, Benjamin, Bartosik, Hannes, Bracco, Chiara, Crockford, Guy, Damerau, Heiko, De Maria, Riccardo, Di Giovanni, Gian Piero, Dumont, Jean-Charles, Fartoukh, Stephane, Follin, Fabio, Fuchsberger, Kajetan, Fuster Martinez, Nuria, Giordano, Francesco, Hemelsoet, Georges-Henry, Jaussi, Michael, Kain, Verena, Kolbeck, Luciana, Komppula, Jani Paavo Olavi, Le Borgne, Yannick, Li, Kevin Shing Bruce, Maclean, Ewen Hamish, Mether, Lotta, Metral, Elias, Papotti, Giulia, Paraschou, Konstantinos, Persson, Tobias Hakan Bjorn, Redaelli, Stefano, Romano, Annalisa, Rumolo, Giovanni, Sabato, Luca, Salvachua Ferrando, Belen Maria, Salvant, Benoit, Schaumann, Michaela, Chapochnikova, Elena, Soderen, Martin, Solfaroli Camillocci, Matteo, Suykerbuyk, Ronaldus, Sveen, Ole Gunnar, Tavian, Laurent Jean, Teofili, Lorenzo, Timko, Helga, Tomas Garcia, Rogelio, Trad, Georges, Uythoven, Jan, Uznanski, Slawosz, Valuch, Daniel, Velotti, Francesco Maria, Walsh, David John, Wenninger, Jorg, and Wulff, Eric

Subjects
Physics::Accelerator Physics, Accelerators and Storage Rings
Abstract

Electron cloud (e-cloud) effects are among the main performance limitations for the operation of the Large Hadron Collider (LHC) with 25 ns bunch spacing. A large number of electrons impacting on the beam-screens of the superconducting magnets induces significant heat load, reaching values close to the full cooling capacity available from the cryogenic system. A number of Machine Development (MD) sessions in 2018 was dedicated to characterizing the heat load as a function of beam and machine parameters, investigating in particular its distribution along the ring and its dependence on the filling pattern, bunch population and bunch length. The main results of these measurements have been compared against simulations performed with the PyECLOUD code in order to validate the underlying model.

Published
2019

9. Impedance Analysis of New PS Internal Dump Design

Author

Popovic, Branko, Teofili, Lorenzo, and Vollinger, Christine

Subjects
resonance, 05 Beam Dynamics and EM Fields, impedance, vacuum, D04 Beam Coupling Impedance - Theory, Simulations, Measurements, Code Developments, Physics::Accelerator Physics, HOM, coupling, Physics::Classical Physics, Accelerators and Storage Rings, Accelerator Physics
Abstract

The High Luminosity Large Hadron Collider (HL-LHC) project at CERN calls for increasing beam intensity in the injector chain. In the Proton Synchrotron (PS), a pre-injector of the LHC, these intensities can result in beam instabilities and potential RF heating of machine components, such that impedance mitigation measures are required. To study these intensity effects, the PS impedance model has been developed and is continuously updated. Each new machine element that is to be added into the accelerator requires an impedance study to minimize its contribution with respect to the machine's overall impedance budget. In such a context, this paper presents the impedance analysis of the new design of the internal beam dump for the PS, showing the design process required to reduce the impedance contribution of this element. Furthermore, the impedance analysis of the currently installed beam dump is analysed in order to compare the impedance contributions of the two designs., Proceedings of the 9th Int. Particle Accelerator Conf., IPAC2018, Vancouver, BC, Canada

Published
2018
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10. Analysis on the Mechanical Effects Induced by Beam Impedance Heating on the HL-LHC Target Dump Injection Segmented (TDIS) Absorber

Author

Teofili, Lorenzo, Calviani, Marco, Carbajo Perez, David, Gilardoni, Simone, Giordano, Francesco, Lamas Garcia, Inigo, Mazzacano, Giacomo, Migliorati, Mauro, and Perillo-Marcone, Antonio

Subjects
History, Materials science, Large Hadron Collider, 05 Beam Dynamics and EM Fields, business.industry, D04 Beam Coupling Impedance - Theory, Simulations, Measurements, Code Developments, Accelerators and Storage Rings, Accelerator Physics, Computer Science Applications, Education, Optics, Electromagnetic shielding, Physics::Accelerator Physics, particle accelerator, Synchrotron, instability, coupling impedance, business, Electrical impedance, Beam (structure)
Abstract

The High Luminosity Large Hadron Collider (HL-LHC) Project at CERN calls for increasing beam brightness and intensity. In such a scenario, critical accelerator devices need to be redesigned and rebuilt. Impedance is among the design drivers, since its thermo-mechanical effects could lead to premature device failures. In this context, the current work reports the results of a multiphysics study to assess the electromagnetic and thermo-mechanical behaviour of the Target Dump Injection Segmented (TDIS). It first discusses the outcomes of the impedance analysis performed to characterise the resistive wall and the high order resonant modes (HOMs) trapped in the TDIS structures. Then, their RF-heating effects and the related temperature distribution are considered. Finally, mechanical stresses induced by thermal gradients are studied in order to give a final validation on the design quality., Proceedings of the 9th Int. Particle Accelerator Conf., IPAC2018, Vancouver, BC, Canada

Published
2018

11. Design of the new proton synchrotron booster absorber scraper (PSBAS) in the framework of the large hadron collider injection upgrade (LIU) project

Author

Teofili, Lorenzo, Briz Monago, Jose, Calviani, Marco, Chritin, Nicolas, Esala, Jaakko, Gilardoni, Simone, Lamas Garcia, Inigo, Maestre, Jorge, Migliorati, Mauro, Polzin, Tobias, and Rijoff, Tatiana

Subjects
History, instability, particle accelerator, 07 Accelerator Technology, Physics::Accelerator Physics, T31 Subsystems, Technology and Components, Other, particle accelerator, Synchrotron, instability, coupling impedance, Accelerators and Storage Rings, Accelerator Physics, Computer Science Applications, Education, Synchrotron, coupling impedance
Abstract

The Large Hadron Collider (LHC) Injector Upgrade (LIU)Project at CERN calls for increasing beam intensity for the LHC accelerator chain. Some machine components will not survive the new beam characteristics and need to be rebuilt for the new challenging scenario. This is particularly true for beam intercepting devices (BIDs) such as dumps, collimators, and absorber/scrapers, which are directly exposed to beam impacts. In this context, this work summarizes conceptual design studies on the new Proton Synchrotron Booster (PSB) Absorber/Scraper (PSBAS), a device aimed at cleaning the beam halo at the very early stage of the PSB acceleration. This paper outlines the steps performed to fulfil the component design requirements. It discusses thermo-mechanical effects as a consequence of the beam-matter collisions, simulated with the FLUKA Monte Carlo code and ANSYS finite element software; and the impedance minimization study performed to prevent beam instabilities and to reduce RF-heating on the device., Proceedings of the 9th Int. Particle Accelerator Conf., IPAC2018, Vancouver, BC, Canada

Published
2018

12. Design of the Target Dump Injection Segmented (TDIS) in the framework of the High Luminosity Large Hadron Collider (HL-LHC) project

Author

Teofili, Lorenzo, Carbajo Perez, David, Lamas Garcia, Inigo, Migliorati, Mauro, and Perillo, Antonio

Subjects
instability, particle accelerator, Beam Instruments and Interactions, Physics::Accelerator Physics, particle accelerator, Synchrotron, instability, coupling impedance, Accelerators and Storage Rings, Accelerator Physics, Synchrotron, coupling impedance
Abstract

The High Luminosity Large Hadron Collider (HL-LHC) Project at CERN calls for increasing beam brightness and intensity. In this scenario most equipment has to be redesigned and rebuilt. In particular, beam intercepting devices (as dumps, collimators, absorbers and scrapers) have to withstand impact or scraping of the new intense HL-LHC beams without failures. Further, minimizing the electromagnetic beam-device interactions is also a key design driver since they can lead to beam instabilities and excessive thermo-mechanical loading of devices. In this context, the present study assesses the conceptual design quality of the new LHC injection dump, the Target Dump Injection Segmented (TDIS), from an electromagnetic and thermo-mechanical perspective. This contribution analyzes the thermo-mechanical response of the device considering two cases: an accidental beam impact scenario and another accidental scenario with complete failure of the RF-contacts. Further, this paper presents the preliminary results for the simulation of the energy deposited by the two counter-rotating beams circulating in the device., Proceedings of the 61\textsuperscript{st} ICFA ABDW on High-Intensity and High-Brightness Hadron Beams, HB2018, Daejeon, Korea

Published
2018

13. Human Exploration of Cis-Lunar Space via Assets Tele-Operated from EML2 (HECATE)

Author

Di Carlo, Marilena, Barbera, Daniele, Conte, Davide, Mintus, Agata, Romero Martin, Juan Manuel, Budzyn, Dorota, Teofili, Lorenzo, Grys, Szymon, Jamieson, Jonathan, Hay, Craig, Lund, Thomas, Ikeda, Nauromi, Volpe, Renato, and Fleming, Douglas

Subjects
TL, QC, QB
Abstract

This paper presents the preliminary design of the international space mission HECATE (Human Exploration of Cis-lunar space via Assets Tele-operated from EML-2), aimed at exploring the far side of the Moon via tele-robotic activities during the 2020s. The exploration is realized by astronauts from HOPE (Human Orbiting Protected Environment), a space habitat in a halo orbit around the Earth-Moon Lagrange Point 2, a critical staging location for future robotic and human deep space missions. Inside the habitat, astronauts have access to tele-robotic hardware and instruments, used to tele-operate rovers and scientific equipment on the surface of the Moon. Plans to resupply and maintain HOPE for future missions, using a solar electric tug, are given. Ultimately, HOPE represents an energetically favorable intermediate locations for missions to Mars, Near-Earth Asteroids, and beyond. &nbsp

Published
2016
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