Typically same as the University (everyday from 8:30 am to 3:30 pm), but if there is extra time required, coordination can be made with the lab Engineer to access the lab for more time.
Totally, your idea will be viewed by The lab supervisors and a time slot will be available for you to work.
If you are a student at AUC, you can ask for a permission to use the machine from the lab engineer and a time slot will be arranged.
Anyone from the AUC community, on the condition that lab engineer or superivsor is available to be with you.
Surely, Lab engineer will help you throughout as long as time allows.