====== IF5: Micro Pattern Gas Detectors (MPGDs) ======
**MPGD Topical Group co-Conveners:**
^Name ^Institution ^email |
|Bernd Surrow|Temple University|surrow[at]temple.edu|
|Maxim Titov|CEA Saclay|maxim.titov[at]cea.fr|
|Sven Vahsen|University of Hawaii|sevahsen[at]hawaii.edu|

**Please send any inquiries to all three conveners by using the following email address:**

**SNOWMASS-IF-05-MPGD-CONVENERS[at]fnal.gov**

**Early career liaisons to the MPGD group:**

^Name ^email ^slack handle|
|Vallary Bhopatkar |vallary.bhopatkar@gmail.com| @Vallary Bhopatkar|
|Michael Hedges | hedges7@purdue.edu | @Michael Hedges|
| Stephen Butalla  | sbutalla2012@my.fit.edu |@Stephen Butalla |
===== Description=====
This Snowmass 2021 topical group will identify and document recent developments and future needs for Micro-Pattern Gaseous Detector (MPGD) technologies, driven by the availability of modern photolithographic techniques. 

Current MPGD technologies include the Gas Electron Multiplier (GEM), the Micro-Mesh Gaseous Structure (MicroMegas), THick GEMs (THGEMs), also referred to in the literature as Large Electron Multipliers (LEMs), the Resistive Plate WELL (RPWELL), the GEM-derived architecture (micro-RWELL), the Micro-Pixel Gas Chamber (μ-PIC), and the integrated pixel readout (InGrid). In recent years, there has been a surge in the use of MPGDs. MPGDs are now used in major ongoing particle-collider experiments (e.g., ATLAS, CMS, and ALICE at the LHCb) and are in development for future facilities (e.g., EIC, ILC, FCC, and FAIR). A majority of MPGD developers and users coordinate and collaborate as part of the CERN-RD51 collaboration.

MPGDs are of interest for particle/hadron/heavy-ion/nuclear physics, charged particle tracking, photon detectors and calorimetry, neutron detection and beam diagnostics, neutrino physics, and dark matter detection, including operation at cryogenic temperatures. Beyond fundamental research, MPGDs are in use and considered for scientific, social, and industrial purposes; this includes the fields of material sciences, medical imaging, hadron therapy systems, and homeland security. 

Any groups interested in MPGD detectors are encouraged to submit a 2-page Letter of Interest. The deadline for Letters of Interest is August 31, 2020. We suggest that interested groups contact the IF5 working group co-conveners. Further details on submitting written contributions can be found here: https://snowmass21.org/loi. 

===== Submitted LOI =====
Here is the list of submitted LOIs to this topical group.   First index before "/"  corresponds to the primary frontier used for the submission.
 {{url>https://www.snowmass21.org/docs/files/list.php?frontier=IF5  noborder 95%,600px}}