Embodiments of sensor devices for characterizing magnetic fields formed in substrate processing systems and methods of use thereof are provided herein. The rear hood includes a pivot device disposed in an upper front end region thereof and having a pivot axis extending transversely of a vehicle body. Tracks extend along the side rails for permitting the rolling gate curtain to travel within the side rails for enclosing the cabinet enclosure system and maintaining the rolling gate curtain in a spaced apart relationship with the cabinet front plane for the purpose of minimizing damage to cabinet contents.