[Dsg-hallb_magnets] Fwd: Question regarding current fastDAQ data from Solenoid fast dump on Sept 13, 2017

[Amrit Yegneswaran]

thanks onish 


From: "Tyler Lemon" <tlemon at jlab.org> 
To: "dsg-hallb magnets" <dsg-hallb_magnets at jlab.org>, "Onish Kumar" <okumar at jlab.org> 
Sent: Thursday, September 14, 2017 10:10:22 AM 
Subject: [Dsg-hallb_magnets] Fwd: Question regarding current fastDAQ data from Solenoid fast dump on Sept 13, 2017 

Thank you, Onish, for your reply. 

Best regards, 
Tyler 

From: "Ruben Fair" <rfair at jlab.org> 
To: "Tyler Lemon" <tlemon at jlab.org> 
Sent: Thursday, September 14, 2017 9:53:00 AM 
Subject: Fwd: [Dsg-hallb_magnets] Question regarding current fastDAQ data from Solenoid fast dump on Sept 13, 2017 

From: "Onish Kumar" <okumar at jlab.org> 
To: "Ruben Fair" <rfair at jlab.org> 
Sent: Thursday, September 14, 2017 9:52:07 AM 
Subject: Re: [Dsg-hallb_magnets] Question regarding current fastDAQ data from Solenoid fast dump on Sept 13, 2017 

Hi Ruben, 

The reason I could think of this spike in current is due to the bouncing of the dump switch and loss of the return path. Due to loss of the return path PS try to regulate and hence PID try to compensate by overshooting which will also explain the DC Overload Fault at the interlock screen. 

Thanks, 
Onish 



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