VAC (OMC)takashi.uchiyama - 12:55 Monday 03 March 2025 (32875)
Print this reportComment to Pressurization of OMC to atmospheric pressure on Feb. 24/ 2025 (32788)2025/03/03
Uchiyama, Kimura
We opened GVsrm at around 11:10. Before this work we performed the following actions to avoid frosting ITMs.
1: Set BS safe 2: Start BS +X, BS+Y side TMPs 3: Close GVbsx, GBbsy 4: Open GVsrm 5: Disconnect the pumping unit of the SRM from the duct (close the GV of the pumping unit) 6: Start the ion pump of the SRM 7: Connect the pumping unit of SRM to the duct (open the GV of the pumping unit) 8: Close TMP's GV at SRM 9: Set SRM, SR3 safe 10: Open GVbsx, GVbsy 11: Stop TMP at SRM 12: Stop BS+X, BS+Y side TMPs