Changes

ES3 was constructed as part of the HEPL physics lab in the 1960s. At the type HEPL had buildings across modern day e-quad, ES3 and ES2 being the only two remaining.  

ES3 was constructed as part of the HEPL physics lab in the 1960s. At the type HEPL had buildings across modern day e-quad, ES3 and ES2 being the only two remaining.  

The reason for HEPL construction coinciding with SLAC construction is unclear. SLAC was built in  

The reason for HEPL construction coinciding with SLAC construction is unclear. SLAC was built in [[File:thumbnail.jpg|thumb|Link to full viewer|link=https://purl.stanford.edu/mx948nt2935]]

 

[https://purl.stanford.edu/mx948nt2935 View the image at Stanford Digital Repository]

 

=== Mark Accelerators ===

=== Mark Accelerators ===

=== Dark Matter Reearch ===

=== Dark Matter Reearch ===

[[File:Screenshot 2025-06-18 at 9.39.09 AM.png|thumb|Tunnel schematic on south side of ES3, including tunnel A expansion]]

[[File:Mx948nt2935 00 0001-2.jpg|thumb|Tunnel schematic on south side of ES3, including tunnel A expansion]]

In the 1990s, ES3 became the home of dark matter research. In particular, the researchers expanded Tunnel A to be larger and more cavernous, allowing detection of cosmic rays with shielding provided by the Earth. Reports here suggest that the tunnels were 10m before expansion [TODO find schematics of that]

In the 1990s, ES3 became the home of dark matter research. In particular, the researchers expanded Tunnel A to be larger and more cavernous, allowing detection of cosmic rays with shielding provided by the Earth. Reports here suggest that the tunnels were 10m before expansion [TODO find schematics of that]