There is a basic introduction to Space Weather here, on the ACIS Ops twiki.

There is also a discussion of ACIS response to radiation storms in the On Radiation memo.

Several recent orbits have presented challenging radiation situations, making us look hard at the criteria for recommending an SCS 107 interruption of the science loads. Below are memos on several of them.

MAY2213, May 22, 2013

DEC2214, December 22, 2014

SEP1017, July and September 2017

FEB2623, February 26, 2023

MAR2023, March 20, 2023

APR2323, April 23, 2023

NOV2023, November 20, 2023

MAR2224, March 22, 2024

MAY1024, May 10, 2024

JUN0724, June 7, 2024

JUL2324, July 23, 2024

OCT2724, October 27, 2024

NOV2124, November 21, 2024

MAR2425, March 24, 2025

JUN0125, June 1, 2025

SEP0125, September 1, 2025

NOV1125, November 11, 2025

A more general listing of radiation events of interest can be found here.