We installed two magnetic probes:

• ENV_IB_MC_PIPE_MAG_X   - on the MC pipe close to IB (SIB1) vacuum chamber, X channel which is oriented in the horizontal direction perpendicular to the pipe (pictured in Figure 1)
• ENV_IB_TURBO_PUMP_MAG_X - on the turbo pump of IB (SIB1) chamber, X channel which is oriented in the horizontal direction perpendicular to the pump axis (pictured in Figure 2)

We also measured (one spot) the mag. field intensity  along the 3 perpendicular directions. This is shown in Figure 3 (MC tube) and Figure 4 (turbo pump). At the MC tube we find that the Magnetic field is well polarized, the max amplitude being along X.