====== ET design update telecons ======

We will use team speak for the telecons together with slides posted on the wiki.

Teamspeak details are
  * server: zam.mit.edu
  * password: la$er
  * channel: ET 

===== Future telecons =====

Telecons are usually held on every second Wednesday of a month, 4pm-5pm CET, 3pm-4pm  UK time.

The next dates are:


  * 10th of July 2019
  * 14th of August 2019
  * 11th of September 2019
  * 9th of October 2019
  * 13th of November 2019
  * 11th of December 2019

===== Telecons =====

==== 12th of June 2019 ====
  * Updates for  ET site parameter evaluation WG2 and WG3:
    - Federico Paoletti for WG2 (sensors and sensor installation): {{:et_update_2017:et_wg2_fede.pptx|SLIDES}}
    - Lino Grado for WG3 (site conditions: geology, (geo) hydrology, accessibility,…): {{:et_update_2017:et_wg3_grado.pptx|SLIDES}}
  * Updates/summaries from recent meetings ([[https://agenda.infn.it/event/15928/timetable/?view=standard|GWADW]], [[https://indico.ego-gw.it/event/20/timetable/ |DAWN V]] etc)
  * AOB

Recording of the call: {{:et_update_2017:et_monthly_june2019.mp3|mp3-file}}


==== 8th of May 2019 ====
  * N. De Lillo, A. Utina, A. Singha: "3G sensitivities and how to and how to look at them." Slides {{:et_update_2017:sensitivities_for_etmeetin_v2.pptx|ppt}}, {{:et_update_2017:sensitivities_for_etmeetin_v2.pdf|pdf}}
  * A. Singha: "A time domain simulator for ET" Slides {{:et_update_2017:et_telecon_presenation_ontimedomainsimulationet_v3.pptx|ppt}}, {{:et_update_2017:et_telecon_presenation_ontimedomainsimulationet_v3.pdf|pdf}}

==== 13th of February 2019 ====
  * Eugene Polzik: "GWD beyond SQL with the negative mass spin oscillator" slides ({{:et_update_2017:talk_et_polzik.pptx|ppt}}; {{:et_update_2017:talk_et_polzik.pdf|pdf}})
  * Riccardo DeSalvo: "Considerations to reduce beamsize on ET beamsplitter" ({{:et_update_2017:triangular_vs._tarditional.pptx|slides}}, {{:et_update_2017:considerations_about_triangular_vs_x_.docx|document}})
  * All: Any other updates/news
 
==== 16th of January 2019 ====
  * Jan Harms: Site Evaluation Parameters
  * Michele: Updates from meeting with APPEC + updates from ET-steering group meetings. 

==== 21st of November 2018 ====
  * Matt Pitkin et al: "Evidence for a minimum pulsar ellipticity?" ({{:et_update_2017:11_2018_etpulsarpresentation.pdf|Slides}}, [[https://arxiv.org/abs/1806.02822|Paper]])
  * Matyas Vashut: "Seismic noise measures" ({{:et_update_2017:et1121.pdf|slides}})
  * Updates re ESFRI roadmap application
  * Any other news

==== 18th of October 2018 ====
  * Raffaele/Tomek: Current Thinking on ET collaboration governance structure ({{:et_update_2017:flaminio_etstructure_october2018.pptx|slides}})
  * Sathya: Summary from GWIC 3G Science team meeting at AEI-Golm https://www.dropbox.com/sh/6ffhwmadnacwfwl/AADdKud1k1e0Y_eZteOm2qD6a?dl=0
  * Michele Maggiore: "{{:et_update_2017:etteleconf_oct2018.pdf|How to study dark energy with ET?}}" (1805.08731)  
  * News on ET (all)
  * AOB

==== 19th of September 2018 ====
  * Quick update from DAWN IV meeting (David S., all), Program: https://indico.nikhef.nl/event/1174/  Slides: https://dcc.ligo.org/cgi-bin/DocDB/DisplayMeeting?conferenceid=1012
  * News from ESFRI and APPEC (Michele). Note 2018 ESFRI roadmap now available here: http://roadmap2018.esfri.eu/
  * Discussion 1: How to be become confident to achieve ET LF sensitivity? What is required and what are the risks? (all)
     - What can be tested before building ET?
     - What is needed for such tests?
     - What are the risks of committing to such test in advance of ET?
     - How to trade off the risks vs confidence gained by funders in ET?
     - Noises that need consideration: NN, susp, seismsic, radiation pressure noise, control noise, scattered light.
     - Do we need a detailed technical noise budget (simulink NB or similar)? If yes, what level of detail is required? If yes, how can we organise this development as teamwork?
     - Would it be useful to define a target/maximal slope of the LF wall (Think something 8 orders of magnitude in h/ decade in frequency)
  * Discussion 2: How to calculate the ET facility limits? (all) 
     - Background: We always make an emphasis that ET is an infrastructure, not a single detector generation. One way to stress this further would be to always show a strain facility limit in addition to any ET strain sensitivities we show.
     - What do we need to include? NN + residual gas noise? Any reduction to be assumed for NN?
  * Any other news or topics?

==== 7th of March 2018 ====
  * Hinderer: Quick example of frequency dependence of source parameters for ETD ({{:et_update_2017:example-1.pdf|slides}})
  * Punturo et al: Discussion  of new draft of letter of intent (LoI) https://1drv.ms/b/s!AmoHzai09yjjgaVDLOd-ViZe_Xy7Rg
  * Update on Italian government announcement re ET support for Sardinia bid
  * Organisation of Upcoming ET meeting, April 19-20th: http://events.ego-gw.it/indico/event/9thETsymposium

==== 7th of February 2018 ====
  * Martin/Steinlechner: 12 times coating noise reduction at 2um {{:et_update_2017:et_presentation_asi_7_2_18.pdf|(slides)}}
  * Punturo: Discussion  of draft of letter of intent (LoI) https://www.dropbox.com/s/vnbh5xjt7txi0eg/Letter%20of%20Intent%20-%20v2.0.pdf?dl=0 
  * Update from Liege meeting; webpage: http://einsteintelescope.ulg.ac.be/
  * Upcoming ET symposium, April 19-20th: http://events.ego-gw.it/indico/event/9thETsymposium

==== 10th Jan 2018 ====
  * Updates from the Appec Strategy Launch event,  https://indico.nikhef.nl/event/767/
  * Stefan Hild and Jan Harms: "Some questions about ET site selection", {{:et_update_2017:some_questions_about_et_site_selection.pdf|slides}}  --- Volunteers to further look into this: Jan Harms, Stefan Hild, Ed Daw, Niels van Bakel, Tomek Bulik
  * Peter Ván and Laszlo Somlai: "Long term seismic noise in Matra" https://mydrive.kfki.hu/f/498cf310b8/?dl=1
  * Sebastien Clesse: Belgium local ET meeting: https://events.uliege.be/telescope-einstein/programme/


==== 6th Dec 2017 ====

  * Updates from APPEC meeting in Barcelona (M. Punturo)
  * Plans for the launch of the new  APPEC strategy document (J. v. Brand) -  link to European Astroparticle Physics Strategy 2017-2026 [[http://www.appec.org/roadmap]]
  * {{:et_update_2017:freise_et_widebeams.pdf|Alignment noise copupling with large beams}} (A. Freise)
  * {{:et_update_2017:171206-et-science-team.pdf|GWIC 3G Science case efforts}} (Sathya)
  * next steps
  * Link to ESFRI questionaire: http://www.esfri.eu/sites/default/files/docs/ESFRI%20Roadmap%202018_Proposal_Submission_Questionnaire_Public.pdf