The ACE level 2 data are in the public domain and as long as you acknowledge the appropriate instrument team(s) and the ACE Science Center you may use the data in your publications and presentations.

For instance, if you use the ACE SWEPAM data, the following would be an appropriate acknowledgement:

We thank the ACE SWEPAM instrument team and the ACE Science Center for providing the ACE data.

We would appreciate preprints/reprints of your papers when they become available.