[Dsg-hallb_magnets] Hall Sensor calibration data

[Renuka Rajput-Ghoshal]

Thanks Pablo,

Renuka


----- Original Message -----
From: "Pablo Campero" <campero at jlab.org>
To: "Renuka Rajput-Ghoshal" <renuka at jlab.org>
Cc: "dsg-hallb magnets" <dsg-hallb_magnets at jlab.org>
Sent: Thursday, August 10, 2017 11:00:03 AM
Subject: Re: [Dsg-hallb_magnets] Hall Sensor calibration data

Hi Renuka, 

Solenoid PLC code was modified with the new conversion factors. 
Actual readouts for the hall sensors: 

HS1 ~0.08 G 
HS2 ~ 0.02 G 
HS3 ~ 1.33 G 

Best Regards, 
Pablo 



From: "Renuka Rajput-Ghoshal" <renuka at jlab.org> 
To: "Nicholas Sandoval" <sandoval at jlab.org>, "Pablo Campero Rojas" <campero at jlab.org> 
Cc: "Probir Ghoshal" <ghoshal at jlab.org> 
Sent: Thursday, August 10, 2017 10:33:06 AM 
Subject: Re: [Dsg-hallb_magnets] Hall Sensor calibration data 

The calibration data for all the all sensors in in the following folder: 
M:\hallb_eng\CLAS12\Magnets\Solenoid\Controls and Wiring\Hall Sensor location 
The data is in PDF format, if you need the calibration table I have to convert it to excel. 
There is a slight change in the conversion factor 
HS1 (Serial Number 58791) 10.11 mV/Tesla (instead of 9.82 in my previous email) 
HS2 (Serial Number 58796) 10.28 mV/Tesla 
HS3 (Serial Number 58795) 10.03 mV/Tesla 

----- Original Message ----- 
From: "Renuka Rajput-Ghoshal" <renuka at jlab.org> 
To: "Nicholas Sandoval" <sandoval at jlab.org>, "Pablo Campero Rojas" <campero at jlab.org> 
Cc: "Probir Ghoshal" <ghoshal at jlab.org> 
Sent: Thursday, August 10, 2017 9:23:28 AM 
Subject: Re: [Dsg-hallb_magnets] Hall Sensor calibration data 

Hello Nick and Pablo, 
The graph for mV vs Gauss (T) is linear, therefore instead of using the table we can use the factor (mV/T) as well. 
But, if it is easier for you to use the table, I can create the calibration tables as well. 
Please let me know what would you prefer? 
Thanks 
Renuka 


----- Original Message ----- 
From: "Nicholas Sandoval" <sandoval at jlab.org> 
To: "Pablo Campero Rojas" <campero at jlab.org> 
Cc: "dsg-hallb magnets" <dsg-hallb_magnets at jlab.org> 
Sent: Thursday, August 10, 2017 8:28:46 AM 
Subject: Re: [Dsg-hallb_magnets] Hall Sensor calibration data 

Hi Pablo, 

Check the Torus code for how we scaled the Hall sensors. 

S:\hallb_eng\CLAS12\Magnets\Torus\JLab Torus\C&I_Torus\Controls_&_Wiring\Calibration Information\HallSensorCalData 

In the above folder I have an excel sheet where I transferred the cal data from data sheet to get a best fit line for each sensor. Let me know if you have any questions. 

Best Regards, 

Nick 
----- Original Message ----- 
From: "Brian Eng" <beng at jlab.org> 
To: "Pablo Campero Rojas" <campero at jlab.org> 
Cc: "dsg-hallb magnets" <dsg-hallb_magnets at jlab.org> 
Sent: Wednesday, August 9, 2017 5:21:44 PM 
Subject: Re: [Dsg-hallb_magnets] Hall Sensor calibration data 

There's no calibration at all for the HS in either the Torus or Solenoid LabVIEW code. 

The PLC should be getting the HS signals in voltage, not magnetic flux. 

> On Aug 9, 2017, at 5:05 PM, Pablo Campero <campero at jlab.org> wrote: 
> 
> Hi Renuka, 
> 
> PLC reads the raw data from the LV-cRIO in units of [mG] and scale them to convert [G], if any change is required with the calibration data, it has to be performed in the Sol-LV- cRIO program. 
> 
> Brian/ Tyler can you please take a look the actual data for the hall sensors in Renuka's email below. 
> 
> Best Regards, 
> Pablo 
> 
> 
> From: "Renuka Rajput-Ghoshal" <renuka at jlab.org> 
> To: "Nicholas Sandoval" <sandoval at jlab.org>, "Pablo Campero" <campero at jlab.org> 
> Cc: "Probir Ghoshal" <ghoshal at jlab.org> 
> Sent: Wednesday, August 9, 2017 4:30:20 PM 
> Subject: Hall Sensor calibration data 
> 
> Hello Nick and Pablo, 
> I think so far for the solenoid we are using the same as for torus. 
> Now Hall sensors are installed in the bore of the solenoid, the calibration data for all the Hall sensors is given below, please use this data for converting the voltage to field. 
> 
> HS1 (Serial Number 58791) 9.82 mV/Tesla 
> HS2 (Serial Number 58796) 10.28 mV/Tesla 
> HS3 (Serial Number 58795) 10.03 mV/Tesla 
> 
> Please let me know, if you need any more information. 
> 
> Thanks 
> Renuka 
> _______________________________________________ 
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> Dsg-hallb_magnets at jlab.org 
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