Reports until 17:27, Tuesday 14 July 2026
H1 General
filiberto.clara@LIGO.ORG - posted 17:27, Tuesday 14 July 2026 (91035)
Laser Interlock System Down for Upgrade

WP 13417

The MSR Safety System Chassis D1600176 was modified. The EL6900 terminal was replaced with an EL6910. Internal connections were made for the Bypass input and Bypass LED in the control room.

The EtherCAT safety modules EP1908 for IOT1R, ISCT1, and IOT2L were mounted over HAM2. The same was done for the safety modules (EP1908 and EP1957) for TCSX, CHETA_Y&X, and HWS. They are mounted on top of TCS-R1.

Two E-Stop buttons were mounted down the X&Y arms for CHETA.

Software upgrades are ongoing. The system will be left offline. System will need to be fully tested before bringing lasers back online.