S800 Documentation

User Tools

Site Tools

Trace:
gas_handling_system

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision 		Previous revision
Next revision Both sides next revision
gas_handling_system [2018/04/11 16:13]
pereira [Removing Gas from Focal Plane Detectors] 		gas_handling_system [2019/10/19 12:08]
pereira [Tracking Gas bottles pressures]
Line 1: Line 1:
 ====== Detector gas handling system ====== ====== Detector gas handling system ======
  
-  * [[#General information]] +  * [[#General information for focal-plane gas handling system]] 
-  * [[#LabView Control Program]] +  * [[#LabView Control Program for focal plane detectors]] 
-  * [[#Preparation of Gas bottles|Preparation of Gas bottles for filling of detectors]]+  * [[#Preparation of Gas bottles for filling of focal-plane detectors]]
   * [[#Filling Ion Chamber with Gas]]   * [[#Filling Ion Chamber with Gas]]
   * [[#Filling CRDC1 and CRDC2 with Gas]]   * [[#Filling CRDC1 and CRDC2 with Gas]]
   * [[#Removing Gas from Focal Plane Detectors]]   * [[#Removing Gas from Focal Plane Detectors]]
 +  * [[Venting/pumping Intermediate Image box#Filling/Removing gas in Intermediate-image delay PPAC|Filling and removing gas of Intermediate-image delay PPACs]]
   * [[#Tracking Gas bottles pressures|Tracking Gas bottles pressures from Barney]]   * [[#Tracking Gas bottles pressures|Tracking Gas bottles pressures from Barney]]
   * [[#Replacing Gas bottles]]   * [[#Replacing Gas bottles]]
  
-===== General Information =====+===== General Information for focal-plane gas handling system ===== 
 +The gas handling systems for both Focal Plane gas-filled detectors – the [[Detectors#Ionization Chamber|Ionization Chamber]] and the [[Detectors#Cathode Readout Drift Chambers (CRDC)|CRDCs]] – are remotely controlled via a single LabView application running on the computer [[Software|S800FP-PC]] in the S3 vault. This computer can be accessed remotely from the desktop of computer [[Software#u6pc5 (data U6)|u6pc5]], by clicking in the icon **S800 Vault PC**, or by typing ''xfreerdp /u:s800 /v:s800fp.nscl.msu.edu'' from a Linux terminal. A terminal will pop-up asking for the s800 password. Once the virtual session in S800FP-PC is open, the gas handling system can be opened by clicking in the corresponding icon on the desktop **FPGHS_TCPIP-II**. This icon opens the local directory ''C:/Users/s800/Desktop/FPGHS_TCPIP-II''. Once there, run the Labview executable **FPGHS_TCPIP-II.exe**.  
 + 
 +The Labview software communicates with a MKS gas handling system through a Moax Nport 5110 terminal server attached to the bottom of the focal-plane chamber. This terminal server has a hostname s800ghts.nscl.msu.edu, which currently has an static IP address assigned to it (10.65.40.135). When running Labview, go to the Initialization tab and make sure that the terminal server address (IP) and port number (2001) is correct. 
 + 
 + 
 + 
 + 
 + 
 +Note that since the same roughing pump drives the gas handling systems for both gas-filled detectors, extra precautions must be taken to protect one detector from the pressure of the other detector. The fact that the same pump drives both systems is not indicated on the graphics for the LabView control application 
 Required controls and monitoring Required controls and monitoring
   * LabView gas handling system application **FPGHS_TCPIP-II.vi**    * LabView gas handling system application **FPGHS_TCPIP-II.vi** 
   * PanelMate **S800vac.ui page 07**: Focal Plane Detector   * PanelMate **S800vac.ui page 07**: Focal Plane Detector
  
-The gas handling systems for both Focal Plane gas-filled detectors – the [[Detectors#Ionization Chamber|Ionization Chamber]] and the [[Detectors#Cathode Readout Drift Chambers (CRDC)|CRDCs]] – are remotely controlled via a single LabView application running on the computer [[Software|S800FP-PC]] in the S3 vault. This computer can be accessed remotely from the desktop of computer [[Software#u6pc5 (data U6)|u6pc5]], by clicking in the icon **S800 Vault PC**, or by typing ''xfreerdp /u:s800 /v:35.9.56.104'' from a Linux terminal. A terminal will pop-up asking for the s800 password. Once the virtual session in S800FP-PC is open, the gas handling system can be opened by clicking in the corresponding icon on the desktop **FPGHS_TCPIP-II**. This icon opens the local directory ''C:/Users/s800/Desktop/FPGHS_TCPIP-II''. Once there, run the Labview executable **FPGHS_TCPIP-II.exe**. +===== LabView Control Program for focal plane detectors ===== 
 +To start the gas handling system control application, click on the LabView icon **FPGHS_TCPIP_Corrected_V01** on the [[Software|S800FP-PC]] desktop.
  
-Note that since the same roughing pump drives the gas handling systems for both gas-filled detectors, extra precautions must be taken to protect one detector from the pressure of the other detector. The fact that the same pump drives both systems is not indicated on the graphics for the LabView control application+  * The LabView program controls the gas handling system through a Moax terminal server. You have to verify that the address is correct.  
 +      * Go to Initialization tab 
 +      * Confirm that the IP address is 10.65.40.135 (or s800ghts) and the port number is 2001
  
-===== LabView Control Program ===== 
-To start the gas handling system control application, click on the LabView icon **FPGHS_TCPIP_Corrected_V01** on the [[Software|S800FP-PC]] desktop. 
  
   * A log file should be specified before operating the gas handling system   * A log file should be specified before operating the gas handling system
       * A window automatically pops up asking for the name of the log file when the program starts       * A window automatically pops up asking for the name of the log file when the program starts
-      * Use the number of the current experiment (or "test") as the name of the log file and save in file /intranet/files/departments/operations/s800/TO_BE_SPECIFIED+      * Use the number of the current experiment (or the date) as the name of the log file and save in the default directory **/projects/s800/Gas logs**
       * The On indicator next to Is VI running? will flash until a log file is specified and the program initiates communications with the hardware       * The On indicator next to Is VI running? will flash until a log file is specified and the program initiates communications with the hardware
  
Line 37: Line 49:
  
  
-===== Preparation of Gas bottles =====+===== Preparation of Gas bottles for filling of focal-plane detectors =====
  
 ==== In Data-U6 ==== ==== In Data-U6 ====
Line 142: Line 154:
   * Open **valves 5 and 21**   * Open **valves 5 and 21**
  
-  * **IMPORTANT:** CLOSE **VALVE 25** to protect CRDCs from Ion Chamber pressure+  * **IMPORTANT**: Before opening valve 8 (next step), CLOSE **VALVE 25** to protect CRDCs from Ion Chamber pressure
  
   * Empty Ion Chamber to a pressure at or below the pressure of the CRDCs   * Empty Ion Chamber to a pressure at or below the pressure of the CRDCs
Line 162: Line 174:
  
 ===== Tracking Gas bottles pressures ===== ===== Tracking Gas bottles pressures =====
 +A rather conservative rule of thumb that helps estimate how much gas will be consumed during a given period of time assumes that the S800 IC detector consumes **~10 psi/day of P10**. Likewise, the CRDCs consume **~10 psi/day of CF4** and **~0.07 lb/day of Isobutane**.
 +
 +
 In order to track the status of the gas bottles for the [[Detectors#Ionization Chamber|ionization chamber]], the  [[Detectors#Cathode Readout Drift Chambers (CRDC)|CRDCs]], and the [[Detectors#[Tracking Parallel Plate Avalanche Counters (TPPAC)]|TPPAC]], it is possible to monitor their remaining pressures from Barney. Just open the **A1900** page, then **Tools**, and then **Gas Status**. The following window will be displayed: In order to track the status of the gas bottles for the [[Detectors#Ionization Chamber|ionization chamber]], the  [[Detectors#Cathode Readout Drift Chambers (CRDC)|CRDCs]], and the [[Detectors#[Tracking Parallel Plate Avalanche Counters (TPPAC)]|TPPAC]], it is possible to monitor their remaining pressures from Barney. Just open the **A1900** page, then **Tools**, and then **Gas Status**. The following window will be displayed:
  
gas_handling_system.txt · Last modified: 2023/05/11 11:29 by pereira

Page Tools

Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Noncommercial-Share Alike 4.0 International
CC Attribution-Noncommercial-Share Alike 4.0 International Donate Powered by PHP Valid HTML5 Valid CSS Driven by DokuWiki