Dear Colleagues. We are writing to you as the conveners of the Calorimetry group of the Instrumentation Frontier for Snowmass 2021. The mission of our Snowmass 2021 process is for all of us to review the current status of calorimetry, put forward new ideas, and define the next 5-10 years in terms of improved experiments. We look forward to hearing about and discussing your work on calorimetry, lessons learned, ongoing and projected R&D, ideas for new techniques and suggestions for improving existing techniques, and any views or concerns about the state of our research area. We are presently organizing our activities into several major areas: - Calorimetry requirements from physics - Experiments/Facilities using Calorimetry - Technology Tools and Calorimeter Development Areas - Performance Studies We have a few different communication channels that we hope you will participate in. Webpage for community meeting announcements and minutes: https://snowmass21.org/instrumentation/calorimetry E-mail list, primarily for announcements: [log in to unmask] (to subscribe, send an e-mail to [log in to unmask] with the subject line blank and the words SUBSCRIBE SNOWMASS-IF-06-CALORIMETRY FIRSTNAME LASTNAME in the body of the message) Slack, for real-time discussion: team snowmass2021, channel #if06-calorimetry (using a CERN or Fermilab e-mail address to join the team should work—if not, please e-mail [log in to unmask] with the subject line “snowmass slack” for help) We look forward to hearing from you, either directly via email, or through the submission of Letters of Interest (https://snowmass21.org/loi) and through contributed papers (https://snowmass21.org/submissions/start). Letters of interest are being solicited now through August 31, 2020. With best regards, Andy White, University of Texas at Arlington ([log in to unmask]) Minfang Yeh, Brookhaven National Laboratory ([log in to unmask]) Rachel Yohay, Florida State University ([log in to unmask]) Snowmass 2021, Instrumentation Frontier – Calorimetry conveners. ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the SID-ALL list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=SID-ALL&A=1