Design Summary Memos
Design Summary Memos (DSMs) are short documents describing the designs, key driving requirements, and relevant tests and/or analyses for each subsystem of the ngEHT. DSMs are configuration-controlled and managed by the ngEHT Project Office.
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Memo Title | Memo # | Author(s) | Date |
|---|---|---|---|
L2 New Station | NG0145 | J. Houston | 12/08/2023 |
L3 Testing and Coherence System (TACOS) | UA_MSRI2_002 | A. Lowitz, R. Tilanus | 12/08/2023 |
L3 Dual Band SPT 230/345 Receiver | UA_MSRI2_001 | R. Tilanus, A. Lowitz, D. Marrone | 12/08/2023 |
L3 Haystack 37m Rx and Site Implementation | NG0175 | J. Kauffmann, G. Rajagopalan | 11/30/2023 |
L3 GLT and JCMT Foreoptics | NG0174 | M.-T. Chen, P. Friberg, L. Zeng, E. Tong | 11/08/2023 |
L3 Dual Band 230/345 GHz Receiver | NG0153 | G. Narayanan | 11/01/2023 |
L3 GLT and JCMT Local Oscillator | NG0173 | D. Kubo | 11/01/2023 |
L3 86 GHz Receiver | NG0154 | E. Tong | 10/23/2023 |
L3 Block Downconverter & Digital Backend | NG0156 | R. Srinivasan | 10/23/2023 |
Haystack Correlator Upgrade | NG0166 | C. Ruszczyk | 10/20/2023 |
L3 Local Monitoring & Control | NG0158 | R. Chaves | 10/20/2023 |
L2 Data Pipeline & Computing | NG0164 | K. Akiyama, L. Blackburn, C.-K. Chan | 10/20/2023 |
Harvard Cannon HPC Correlator | NG0165 | L. Blackburn, W. Yu | 10/20/2023 |
L2 Array Monitoring & Control | NG0150 | R. Chaves | 10/20/2023 |
Recorder Subsystem | NG0157 | J. Barrett | 10/11/2023 |
L3 Timing & Coherence | NG0155 | J. Weintroub | 10/08/2023 |
Project Design Documentation
Project Design Documents chronicle the highest-level decisions guiding the ngEHT design, including the system architecture, requirements, specifications, and operations. These documents are the output of a community-driven, systems engineering design process and will serve as the foundation of a large-scale upgrade to the EHT with new sites and capabilities.
Doc Title | Doc # | Author(s) | Date |
|---|---|---|---|
L0 Stakeholder Requirements Specification | NG0139 | A. Oppenheimer | 12/11/2023 |
Science Traceability Matrix | NG0126 | M. Johnson, D. Pesce, G. Fitzpatrick | 12/09/2023 |
Assembly, Integration and Verification (AIV) Concept | NG0144 | J. Houston | 12/08/2023 |
Verification and Validation Plan | NG0143 | J. Houston | 12/08/2023 |
Operations Concept | NG0142 | J. Houston | 12/08/2023 |
L1 Array System Requirements Specification | NG0140 | R. Chaves | 12/05/2023 |
L1 Array System Architecture Description | NG0141 | R. Chaves | 11/27/2023 |
L3 Antenna Commissioning Concept | NG0172 | N. Patel | 11/17/2023 |
Project Glossary | NG0133 | R. Chaves | 10/13/2023 |
Commissioning and Science Validation (CSV) Concept | NG0162 | M. Johnson | 10/06/2023 |
Trade Study Memo: Site Selection using the Pugh Matrix | NG0146 | M. Freeman | 09/21/2023 |
Antenna Requirements for Vendors | NG0138 | N. Patel, G. Fitzpatrick, M. Freeman, A. Oppenheimer | 04/01/2023 |
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Published Papers
Scientific and technical papers describe the design, projected performance, and science goals of the ngEHT. The ngEHT community has published numerous papers in peer-reviewed journals and on the arXiv; below is a subset with significant influence on the project.
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Paper Title | Journal | Author(s) | Date | DOI |
|---|---|---|---|---|
Black Hole Cinema: Application of Systems Engineering Methods to Expand and Enhance an Earth-Sized Telescope | INCOSE International Symposium | G. Fitzpatrick, R. Chaves | 09/07/2024 | 10.1002/iis2.13129 |
Fundamental Physics Opportunities with the Next-Generation Event Horizon Telescope | arXiv | D. Ayzenberg et al. | 12/04/2023 | 10.48550/arXiv.2312.02130 |
Reference Array and Design Consideration for the Next-Generation Event Horizon Telescope | Galaxies, 11(5) | S. Doeleman et al. | 10/18/2023 | 10.3390/galaxies11050107 |
Key Science Goals for the Next-Generation Event Horizon Telescope | Galaxies, 11(3) | M.D. Johnson et al. | 04/24/2023 | 10.3390/galaxies11030061 |
The Next Generation Event Horizon Telescope Collaboration: History, Philosophy, and Culture | Galaxies, 11(1) | P. Galison et al. | 02/15/2023 | 10.3390/galaxies11010032 |
Studying Black Holes on Horizon Scales with VLBI Ground Arrays | Bulletin of the AAS, 51(7) | S. Doeleman et al. | 09/30/2019 | baas.aas.org/pub/2020n7i256 |
Site Implementation Plans
Site Implementation Plans encompass new site descriptions, diagrams, and drawings; available infrastructure; construction schedules; permitting processes; and environmental impact plans for adding new sites to the EHT array, a key component of the ngEHT. Each plan is considered a living document and will be updated periodically to reflect funding awards and progress.
Plan Title | Plan # | Author(s) | Date |
|---|---|---|---|
Mt. Jelm, Wyoming (JELM) | NG0167 | D. Dale, S. Hurt | 12/12/2023 |
Canary Islands (CNI) | NG0169 | K. Moriyama, J. Gómez, J. A. Rubiño, J. Falcon, J. Houston, M. Tartaro | 12/04/2023 |
San Pedro Mártir (SPM) | NG0168 | UNAM | 12/04/2023 |
Las Campanas Observatory (LCO) | NG0170 | L. Infante, G. Blanc, C. Medina, N. Ulloa, N. Nagar | 12/04/2023 |
JELM Funding Estimate | NG0167b | FMT - Arcon Inc | 12/01/2023 |
JELM Addendum to Subsurface Exploration and Geotechnical Engineering Report | NG0167d | Inberg-Miller Engineers | 11/27/2023 |
JELM Subsurface Exploration and Geotechnical Engineering Report | NG0167c | Inberg-Miller Engineers | 11/09/2023 |
JELM Planset Drawings | NG0167a | WWC Engineering | 11/01/2023 |
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