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*====================================================================* * * * * * * * * * FFFFF L U U K K AAA 222 000 222 333 * * F L U U K K A A 2 2 0 0 2 2 3 3 * * F L U U K K A A 2 0 0 2 3 * * FFFF L U U KK AAAAA === 2 0 0 2 3 * * F L U U K K A A 2 0 0 2 3 * * F L U U K K A A 2 0 0 2 3 3 * * F LLLLL UUU K K A A 22222 000 22222 333 * * * * Authors: A.Fasso`, A.Ferrari, J.Ranft, P.R.Sala * * * * http://www.fluka.org * * * * Copyright (C) 2022-2023 * * Alberto Fasso`, Alfredo Ferrari, Paola Sala, * * and their collaborators * * All rights reserved * * * * ( Copyright (C) 2019-2022 * * Alberto Fasso`, Alfredo Ferrari, and their * * collaborators, * * INFN (Italian National Institute for Nuclear Physics) ) * * * * ( Copyright (C) 1989-2019: * * INFN (Italian National Institute for Nuclear Physics) * * CERN (European Organization for Nuclear Research) ) * * * * Contributors : G.Arico`, G.Battistoni, * * R.dos Santos Augusto, T.Empl, * * Anna Ferrari, M.Lantz, A.Mairani, * * M.C.Morone, S.Muller, S.Muraro, * * V.Patera, M.Santana, G.Smirnov * * Past contributors : T.T.Boehlen, F.Cerutti, M.Chin, * * A.Fontana, M.V.Garzelli, S.Roesler, * * F.Salvat-Pujol, P.Schoofs, * * F.Sommerer, V.Vlachoudis * * * * * * 2023 version of the FLUKA code by : * * * * Alberto Fasso` - SLAC/USA (retired) * * alberto_fasso_at_gmail.com * * * * Alfredo Ferrari - Private * * Karlsruhe Institute of Technology * * Alfredo.Ferrari_at_kit.edu * * * * Paola Sala - Private * * Paola.Sala_at_orange.fr * * * * Johannes Ranft - Siegen University * * (deceased) * * * *====================================================================* 31 August 2023 Modern FLUKA authors (since FLUKA89): A. Fasso`, retired, SLAC Stanford (USA) A. Ferrari, private, Karlsruhe Institute of Technology J. Ranft, Universitaet Gesamthochschule Siegen, Fachbereich Physik, D-57068 Siegen, Germany (deceased) P. R. Sala private Present contributors: G. Arico` Italy G. Battistoni Istituto Nazionale di Fisica Nucleare, via Celoria 16, 20133 Milano, Italy R. dos Santos Augusto TRIUMF, 4004 Wesbrook Mall Vancouver, BC V6T 2A3 Canada A. Empl Houston University, Texas, USA A. Ferrari HDZR, Dresden, Germany M. Lantz Uppsala University, Box 516 751 20 Uppsala, Sweden A. Mairani CNAO, Str. Campeggi, 53, 27100 Pavia, and Heidelberger Ionenstrahl-Therapie (HIT), Heidelberg, Germany M.C.Morone Universita' Tor Vergata, Roma, and INFN, Italy S. Muller HDZR, Dresden, Germany S. Muraro Istituto Nazionale di Fisica Nucleare, via Celoria 16, 20133 Milano, Italy V. Patera Universita' La Sapienza, Roma, and INFN Frascati, Italy M. Santana SLAC Stanford, Menlo Park, CA 94025, USA G. Smirnov Dubna, Russian Federation Other contributors who contributed to previous versions of the modern FLUKA: T.T. Boehlen PSI, Villigen, Switzerland F. Cerutti The European Organization for Nuclear Research, 1211 Geneva 23, Switzerland M. Chin Malaysia A. Fontana Istituto Nazionale di Fisica Nucleare, via Bassi 6, 27100 Pavia, Italy M. V. Garzelli Universita' degli Studi di Milano, Physics Department via Celoria 16, 20133 Milano, Italy S. Roesler The European Organization for Nuclear Research, 1211 Geneva 23, Switzerland F. Salvat-Pujol The European Organization for Nuclear Research, 1211 Geneva 23, Switzerland P. Schoofs The European Organization for Nuclear Research, 1211 Geneva 23, Switzerland F. Sommerer Heidelberger Ionenstrahl-Therapie (HIT), Heidelberg, Germany V. Vlachoudis The European Organization for Nuclear Research, 1211 Geneva 23, Switzerland Other contributors to previous FLUKA versions (from FLUKA82 up to FLUKA92): P. Aarnio Helsinki University of Technology, Dept. of Technical Physics Otakaari 1, SF-02150 ESPOO, Finland (up to FLUKA87) J.-H. Moehring Leipzig University, Germany, Fachbereich Physik, LEIPZIG, Germany (up to FLUKA92) G. R. Stevenson TIS/RP, CERN, CH-1211 GENEVE 23, Switzerland (up to FLUKA90) J. M. Zazula Institute of Nuclear Physics, CRACOW, Poland (up to FLUKA90) Depending on whether the Licensee requested and got approval for a User or Trial FLUKA version, the FLUKA User license or the FLUKA Trial Version license applies respectively (see below). For commercial users, ad hoc licenses are agreed, hence none of the licenses below applies. FLUKA User license COPYRIGHT NOTICE AND LICENSE CONDITIONS FLUKA is a fully integrated particle physics Monte Carlo code. The FLUKA software results in particular from work performed by Alberto Fasso`, Alfredo Ferrari, Johannes Ranft, Paola Sala (the "FLUKA Authors"), and collaborators (the "Collaborators"). The copyright in the FLUKA software Version 2021.2.3 and following is vested as following: Copyright in developments carried out after June 30th 2022 is vested in Alberto Fasso`, Alfredo Ferrari, Paola Sala, and their collaborators(*). Copyright in developments carried out in between September 1st 2019 and June 30th 2022 is vested in Alberto Fasso`, Alfredo Ferrari, their collaborators(*), and INFN. Those parts which are partially or totally copyright of Alberto Fasso` and/or Alfredo Ferrari and/or Paola Sala are licensed free of charge for use in FLUKA as distributed by the FLUKA Authors(**). Copyright in developments carried out before September 1st 2019 is vested in INFN and CERN jointly. Authorship is detailed for every routine in the source code. All rights not expressly granted under this license are reserved. Requests for permissions not granted under this license shall be addressed to the Authors. Any permission may only be granted in writing. The Authors are the exclusive source of distribution of the code, bug fixes and documentation of the FLUKA software version 2021.2.3 and beyond, and may authorise distribution by mirror sites. This license cancels and replaces any prior license condi- tions but their warranty and liability provisions shall con- tinue to apply to any use or modifications made under such prior license conditions.* Creation date and last modification date of each routineas well as its authors are indicated in the source code** A non-exhaustive list of routines and modules which arepartially or totally copyright of Alberto Fasso` and/or Alfredo Ferrari and/or Paola Sala is included in the LICENSED.routines file. DEFINITIONS The FLUKA software ("FLUKA") means the fully integrated particle physics Monte Carlo simulation software package being developed since 1989 by the Authors and available, under the name "FLUKA", from http://www.fluka.org and/or mirror sites authorised by the Authors. FLUKA includes FLUKA core code, and FLUKA User Routines (as defined below). FLUKA User Routines means the set of subroutines collected in the usermvax section of FLUKA and forming part of the standard distribution of FLUKA. The Licensee means any person acting individually within a non-profit organisation, exercising any permission granted by this license. LICENSE GRANT 1. Subject to the terms and conditions of this license, the FLUKA Copyright Holders herewith grant to the Licensee a worldwide, non-exclusive, royalty-free, source and object code license to use and reproduce FLUKA for internal scientific non commercial non-military purposes only. Notwithstanding the foregoing, the Licensee shall not execute FLUKA in a manner that produces an output whose contents are directly useable or easily employable to simulate the physics models embedded within FLUKA in a generic manner, or excise portions of FLUKA source or object code, and execute them independently of FLUKA. Extracting specific isolated results from any of the individual internal physics models embedded within FLUKA is not permitted. Permitted use and reproduction are referred to below as "Use". 2. Modification (including translation) of FLUKA, in whole or in part, is not permitted, except for modification of FLUKA User Routines that do not circumvent, replace, add to or modify any of the functions of the FLUKA core code. Permitted modifications are referred to below as "Modifications". 3. FLUKA is licensed for Use by the Licensee only, and the Licensee shall not market, distribute, transfer, license or sub-license, or in any way make available ("Make Available") FLUKA or Modifications, in whole or in part, to third parties, without prior written permission. The Licensee shall not assign or transfer this license. 4. Notwithstanding section 3, the Licensee may Make Available his Modifications of FLUKA User Routines to third parties under these license conditions. 5. The Licensee shall not insert FLUKA code or Modifications, in whole or in part, into other codes without prior written permission. 6. The Licensee shall not reverse engineer, decompile, decrypt, disassemble or otherwise attempt to derive the source code from the FLUKA binary code or FLUKA data libraries (except as and only to the extent that any foregoing restriction is prohibited by Law), 7. Any use of FLUKA outside the scope of this license is subject to prior written permission. 8. The Licensee shall report as soon as practical any errors or bugs found in any portion of FLUKA to the Authors. PUBLICATIONS AND ACKNOWLEDGEMENT 9. The Licensee shall explicitly acknowledge his use of FLUKA in any publication or communication, scientific or otherwise, relating to such use, by citing the FLUKA set of references (see below) and the FLUKA copyright notice. 10. The Licensee shall ensure that the FLUKA set of references, the FLUKA copyright notice and these license conditions are not altered or removed from FLUKA and that all embodiments of FLUKA and Modifications contain in full the FLUKA set of references, the FLUKA copyright notice, and these license conditions. 11. Any insertion of FLUKA code or Modifications, in whole or in part, into other codes with permission under section 5 shall preserve the FLUKA set of references, the FLUKA copyright notice and these license conditions in the FLUKA code or Modifications concerned, and must also reproduce these within any additional global notices included along or embedded within the software into which the FLUKA code or the Modifications have been integrated, in whole or in part. Any part of the FLUKA code or Modifications so inserted shall continue to be subject to these license conditions. 12. Publication of any results of comparisons of specific internal physics models extracted from FLUKA with permission under section 6 with data or with other codes or models is subject to prior written permission. 13. Contributions to any formal code comparisons and validation exercises pertaining to FLUKA, sponsored by recognised bodies or within the framework of recognised conferences and workshops, are subject to prior written permission. WARRANTY AND LIABILITY 14. DISCLAIMER FLUKA IS PROVIDED BY THE FLUKA COPYRIGHT HOLDERS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY, OF SATISFACTORY QUALITY, AND FITNESS FOR A PARTICULAR PURPOSE OR USE ARE DISCLAIMED. THE FLUKA COPYRIGHT HOLDERS AND THE AUTHORS MAKE NO REPRESENTATION THAT FLUKA AND MODIFICATIONS THEREOF WILL NOT INFRINGE ANY PATENT, COPYRIGHT, TRADE SECRET OR OTHER PROPRIETARY RIGHT. 15. LIMITATION OF LIABILITY THE FLUKA COPYRIGHT HOLDERS AND ANY CONTRIBUTOR SHALL HAVE NO LIABILITY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, CONSEQUENTIAL, EXEMPLARY, PUNITIVE OR OTHER DAMAGES OF ANY CHARACTER INCLUDING, WITHOUT LIMITATION, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, LOSS OF USE, DATA OR PROFITS, OR BUSINESS INTERRUPTION, HOWEVER CAUSED AND ON ANY THEORY OF CONTRACT, WARRANTY, TORT (INCLUDING NEGLIGENCE), PRODUCT LIABILITY OR OTHERWISE, ARISING IN ANY WAY OUT OF THE USE OF FLUKA, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES, AND THE LICENSEE SHALL HOLD THE COPYRIGHT HOLDERS AND ANY CONTRIBUTOR FREE AND HARMLESS FROM ANY LIABILITY, INCLUDING CLAIMS BY THIRD PARTIES, IN RELATION TO SUCH USE. TERMINATION 16. This license shall terminate with immediate effect and without notice if the Licensee fails to comply with any of the terms of this license, or if the Licensee initiates litigation against any of the FLUKA Copyright Holders or any contributors with regard to FLUKA. It shall also terminate with immediate effect from the date on which a new version of FLUKA becomes available. In either case sections 14 and 15 above shall continue to apply to any Use or Modifications made under these license conditions. FLUKA set of references, subject to change "FLUKA: status and perspectives" F. Ballarini, G. Battistoni, N. Belcari, G. Bisogni, M. Campanella, M.P. Carante, G. Dedes, P. Degtiarenko, P. de la Torre Luque, R. dos Santos Augusto, A. Fasso`, A. Fedynitch, Alfredo Ferrari, Anna Ferrari, E. Fiorina, G. Kharashvili, A. Kraan, G. Magro, A. Mairani, I. Mattei, M.N. Mazziotta, M.C. Morone, S. Mueller, S. Muraro, K. Parodi, V. Patera, F. Pennazio, L.S. Pinsky, R. Rachamin, R. Luis Ramos, S. Rollet, P.R. Sala, M.S. Leitner, L. Sarchiapone, T. Tessonnier, K. Smeland Ytre-Hauge, and L. Zana, in Proceedings of the "15th Workshop on Shielding Aspects of Accelerators, Targets, and Irradiation Facilities" (SATIF15), East Lansing, Michigan, USA, September 20-23, 2022, in press "FLUKA: a multi-particle transport code" A. Ferrari, P.R. Sala, A. Fasso`, and J. Ranft, CERN-2005-10 (2005), INFN/TC_05/11, SLAC-R-773 Additional FLUKA references can be added, provided they are relevant for the FLUKA version under consideration.Note:Copyright statements contained in individual files re- ferring explicitly to one or more of the Authors and/or Collaborators, must be interpreted as "Copyright INFN and CERN, Authors: ...", for the period 1989-September 1st 2019, as "Copyright Alberto Fasso`, Alfredo Ferrari , their collaborators, and INFN, Authors: ... ", from September 1st 2019 to June 30th 2022, and as "Copyright Alberto Fasso`, Alfredo Ferrari, Paola Sala, and their collaborators, Authors: ...", from July 1st 2022 onwards. * Start_Devel_seq FLUKA Trial Version license 6 MONTHS TRIAL VERSION END-USER LICENSE AGREEMENT FOR FLUKA SOFTWARE Copyright in developments carried out after June 30th 2022 is vested in Alberto Fasso`, Alfredo Ferrari, Paola Sala, and their collaborators(*). Copyright in developments carried out in between September 1st 2019 and June 30th 2022 is vested in Alberto Fasso`, Alfredo Ferrari, their collaborators(*), and INFN. Those parts which are partially or totally copyright of Alberto Fasso` and/or Alfredo Ferrari are licensed free of charge for use in FLUKA as distributed by the FLUKA Authors and INFN (**). Copyright in developments carried out before September 1st 2019 is vested in INFN and CERN jointly. All rights not expressly granted under this license are reserved. Requests for permissions not granted under this license shall be addressed to fsc@fluka.org. Any permission may only be granted in writing. The FLUKA software results in particular from work performed by Alberto Fasso`, Alfredo Ferrari, Johannes Ranft, Paola Sala (the "FLUKA Authors"), and collaborators (the "Collaborators"). The Authors are the exclusive source of distribution of the code, bug fixes and documentation of the FLUKA software version 2021.2.3 and beyond, and may authorise distribution by mirror sites. By installing, or otherwise using the Trial Version of FLUKA software, you agree to be bound by the terms of this Agreement. If you do not agree to the terms of this Agreement, you should refrain from installing or using the Trial Version of FLUKA software. DEFINITIONS The FLUKA software ("FLUKA") means the fully integrated particle physics Monte Carlo simulation software package being developed since 1989 by the Authors and available, under the name "FLUKA", from http://www.fluka.org and/or mirror sites authorised by the Authors. FLUKA includes FLUKA core code, and FLUKA User Routines (as defined below). FLUKA User Routines means the set of subroutines collected in the usermvax section of FLUKA and forming part of the standard distribution of FLUKA. The Licensors means both the Authors and INFN. The Licensee means any person or entity exercising any permission granted by this license. The Trial Version of FLUKA software ("FLUKA Trial Version") means a version of the FLUKA software to be used only to review, demonstrate and evaluate the FLUKA software. The FLUKA Trial Version has an expiration date which is set out in the title of the Agreement at the sole discretion of the Licensors and which starts as from the date of its downloading by the Licensee ("the Expiration Date"). The FLUKA Trial Version features a built in limitation that purposely impedes unlimited use of the software. It therefore runs in a sub optimal way and limits the computational time to what is deemed adequate for the Purpose as described below. The Purpose should be defined as the willingness of the Licensee to use the Trial version of the FLUKA software in order to evaluate the suitability of FLUKA software for commercial applications and to determine whether to purchase FLUKA under commercial license conditions. Make Available means to market, distribute, transfer, license or sub-license, or in any way dispose of or make available. Output means results and data generated using FLUKA Trial Version, or any procedure or algorithm making use of results and data generated with FLUKA Trial Version, but excludes Comparisons (as defined below). Comparisons means results of benchmark comparisons of the FLUKA Trial Version physics models LICENSE GRANT 1. The Parties agree that the copyright and all other rights related to FLUKA, in whatever form, including but not limited to the object code, source code and user interface, are vested in Licensors, and that Licensors retain all title, copyright and any other proprietary rights in FLUKA. 2. All rights not expressly granted under this Agreement are reserved. 3. Subject to the terms and conditions of this Agreement, Licensors herewith grant to the Licensee a non-exclusive, non-transferable object code license to use the FLUKA Trial Version for the Purpose. 4. The scope of the license granted under this Agreement is strictly limited to the use of the FLUKA Trial Version for the Purpose and specifically excludes any scientific or commercial applications. 5. The Licensee shall under no circumstances circumvent the built in limitations contained in the FLUKA Trial version. 6. FLUKA Trial Version is licensed for use by the Licensee only, at the Licensee's site, and the Licensee shall not Make Available FLUKA Trial Version, in whole or in part, either separately or with a product or service, to third parties, without Licensors' prior written permission. 7. The Licensee may not modify, translate, decompile, disassemble, decrypt, extract, or otherwise reverse engineer FLUKA Trial Version, nor may the Licensee attempt to create the source code from the object code of FLUKA Trial Version. The Licensee may not insert FLUKA Trial Version code, in whole or in part, into other codes. The Licensee may not create derivative works of FLUKA Trial Version. It is understood that Output is not considered derivative works. 8. Without prejudice to article 5, the Licensee may modify FLUKA User routines to the extent that the purpose of the modifications is limited to the adaptation of input and output interfaces of FLUKA. Any such modifications are permitted only to the extent that they do not circumvent, replace, add to, or modify any of the functions of FLUKA, or extract specific isolated results from any of the individual internal physics models embedded within FLUKA. 9. The Licensee may use FLUKA Trial Version to generate Output for the Purpose only. The Licensee shall not Make Available such Output to third parties. 10. The Licensee may use FLUKA Trial Version to generate Comparisons for the Purpose but may not Make Available such Comparisons. 11. Any use of FLUKA Trial Version outside the scope of articles 3 to 7 is subject to prior written permission from Licensors. No Party may assign or transfer this Agreement to a third party. 12. The Licensee shall not use FLUKA Trial Version, Output, or Comparisons for military purposes. 13. The Licensee shall not copy FLUKA Trial Version, in whole or in part, for distribution purposes. PAYMENT 14. The FLUKA Trial Version is provided to Licensee free of charge. MAINTENANCE AND SUPPORT 15. The Licensors are under no obligation to correct any problems or errors of FLUKA Trial Version. WARRANTY AND LIABILITY 16. DISCLAIMER: FLUKA TRIAL VERSION IS PROVIDED BY LICENSORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY, OF SATISFACTORY QUALITY, AND FITNESS FOR A PARTICULAR PURPOSE OR USE ARE DISCLAIMED. LICENSORS AND THE AUTHORS MAKE NO REPRESENTATION THAT FLUKA TRIAL VERSION WILL NOT INFRINGE ANY PATENT, COPYRIGHT, TRADE SECRET OR OTHER PROPRIETARY RIGHT. LICENSORS ARE NOT AWARE OF ANY FACTS THAT WOULD LEAD A REASONABLE PERSON TO BELIEVE THAT USE OF FLUKA TRIAL VERSION WOULD INFRINGE THIRD PARTY RIGHTS. THE LICENSEE ACKNOWLEDGES THAT LICENSORS AND THE AUTHORS HAVE NOT PERFORMED ANY SEARCHES OR INVESTIGATIONS INTO THE EXISTENCE OF ANY THIRD PARTY RIGHTS THAT MAY AFFECT FLUKA TRIAL VERSION. 17. LIMITATION OF LIABILITY: EXCEPT AS MAY BE MANDATED BY LAW, IN CASE OF GROSS NEGLIGENCE OR WILFUL MISCONDUCT, LICENSORS AND ANY CONTRIBUTOR SHALL HAVE NO LIABILITY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, CONSEQUENTIAL, EXEMPLARY, PUNITIVE OR OTHER DAMAGES OF ANY CHARACTER INCLUDING, WITHOUT LIMITATION, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, LOSS OF USE, DATA OR PROFITS, OR BUSINESS INTERRUPTION, HOWEVER CAUSED AND ON ANY THEORY OF CONTRACT, WARRANTY, TORT (INCLUDING NEGLIGENCE), PRODUCT LIABILITY OR OTHERWISE, ARISING IN ANY WAY FROM THE USE, INCLUDING ANY INABILITY TO USE, FLUKA TRIAL VERSION AND/OR OUTPUT, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES, AND THE LICENSEE SHALL HOLD LICENSORS AND ANY CONTRIBUTOR FREE AND HARMLESS FROM ANY LIABILITY, INCLUDING CLAIMS BY THIRD PARTIES, IN RELATION TO SUCH USE. 18. The Parties shall take all necessary measures to prevent any infringement of the terms of this Agreement. The Licensee shall be liable to Licensors for any such infringement by the Licensee and shall hold Licensors free and harmless and indemnify them for any and all claims or lawsuits which may result there from. DURATION AND TERMINATION 19. This Agreement shall enter into force on the day of its downloading by the Licensee. 20. This Agreement shall terminate and the license shall lapse after the Expiration date of the FLUKA Trial Version. 21. This Agreement may terminate if the Licensee fails to comply with any of the terms of this Agreement such termination having been notified in writing by the Licensors and being effective within thirty (30) days unless within that period the breach is remedied by the Licensee, or if the Licensee institutes litigation against any of Licensors or any contributors with regard to FLUKA Trial Version, without any compensation being due by either Licensor to the Licensee. 22. In any case of termination of the Agreement the license shall lapse and the Licensee shall uninstall and delete all copies of the Software, including the user documentation. 23. In case of termination of this Agreement for any reason whatsoever and at the request of either Party, the other Party shall promptly return any confidential information belonging to the first Party. 24. Notwithstanding termination of the Agreement howsoever caused, its provisions shall continue to bind the Parties in so far and for as long as may be necessary to give effect to their respective rights and obligations accrued prior to termination. 25. The provisions of this Agreement shall be interpreted in accordance with its true meaning and effect. Reference shall be made to Italian substantive law where (i) a matter is not specifically covered by this Agreement; or (ii) a provision is ambiguous or unclear. Such reference shall be made exclusively for the matter or provisions concerned, and shall in no event apply to the other provisions of this Agreement. * End_Devel_seq FLUKA set of references, subject to change "The FLUKA Code: Developments and Challenges for High Energy and Medical Applications" T.T. Bohlen, F. Cerutti, M.P.W. Chin, A. Fasso`, A. Ferrari, P.G. Ortega, A. Mairani, P.R. Sala, G. Smirnov, and V. Vlachoudis, Nuclear Data Sheets 120, 211-214 (2014) * Start_Devel_seq "Overview of the FLUKA code" G. Battistoni, T. Boehlen, F. Cerutti, P.W. Chin, L.S. Esposito, A. Fassò, A. Ferrari, A. Lechner, A. Empl, A. Mairani, A. Mereghetti, P. Garcia Ortega, J. Ranft, S. Roesler, P.R. Sala, V. Vlachoudis, G. Smirnov, Annals of Nuclear Energy 82, 10-18 (2015) * End_Devel_seq "FLUKA: a multi-particle transport code" A. Ferrari, P.R. Sala, A. Fasso`, and J. Ranft, CERN-2005-10 (2005), INFN/TC_05/11, SLAC-R-773 Additional FLUKA references can be added, provided they are relevant for the FLUKA version under consideration. This set of references is subject to change in time. New ones will be communicated, when necessary, in the Release Notes of new FLUKA versions. For questions/clarifications/problems about the license or in general the use of FLUKA please contact the Authors, in particular: Dr. Paola R. Sala Paola.Sala_at_orange.fr FLUKA2023 MANUAL IMPORTANT WARNING FOR THE USERS This manual is a reference tool for preparing input for the 4th generation of the FLUKA particle transport code, mantained and developed by A.Fasso`, A.Ferrari, P.R.Sala (J.Ranft unfortunately died in 2018). It is not complete and it is not guaranteed to be free from errors. It is continually evolving just as the code does. It should not be cited: the proper references to be cited in any recent work related to FLUKA are listed above (see also the list of References in 19}). In using the code, the user agrees on the authorship and copyright and hence is bound to quote the above references. Please note also that early versions of the FLUKA hadronic event generator as implemented in other codes (in particular GEANT) should be referenced as such (e.g. GEANT-FLUKA) and not as FLUKA. They have little in common with the present version and should be considered virtually obsolete. The proper reference to GEANT-FLUKA is Fas93a. It must be noted that after the termination of the INFN-CERN Agreement of 2003, CERN started to distribute a so-called ``FLUKA-4'' code, whose legality is legally disputed by the surviving FLUKA Authors, A.Fasso`, A.Ferrari, P.R. Sala, who consider that it infringes on their authorship rights as protected by the Bern convention, and by the Swiss, Italian, and European laws. Some parts of the manual must be "enriched": output etc.; the part on auxiliary programs must be updated. Please refer to alberto.fasso_at_gmail.com / Alfredo.Ferrari_at_kit.edu / Paola.Sala_at_orange.fr for any comment or criticism on this manual and/or the code. Alberto Fasso`, Alfredo Ferrari, Paola Sala