User's Manual For Beamline 9.3.1
by Ana Galvan

Emergency Numbers

Beamline 9.3.1 Parameters

Dimensions of Area Allowed for End Stations

Operating Beamline 9.3.1

1. Beamline' Software

1.1 Windows Login Screen

1.2 Labview Data Acquisition Program

1.2.1 Experimenter Window
1.2.2 Monochromator Scan Window (MSW)
1.2.3 Tune Up Screen
1.2.4 Quadrant Photodiode

1.3 Data Collection

1.3.1 Scan Ranges
1.3.2 Channel Selection
1.3.3 Channel Signal Tester/Chart Recorder
1.3.4 Data File Format
1.3.5 Retrieving Data Files
1.3.6 Saving Data Files
1.3.7 Printing Plot of Live Data

1.4 Vacuum Valves Controls

 

User's Manual For Beamline 9.3.1

Emergency Numbers

Beamline 9.3.1 Parameters

Dimensions of Area Allowed for End Stations

Operating Beamline 9.3.1

In order to operate the beamline the user needs to be able to operate the software and open and close vacuum valves.

1. Beamline' Software

The data acquisition computer is located on a desk alongside the beamline.

The beamline monochromator and data-acquisition system are controlled from this computer. The computer is generally left running.

1.1 Windows Login Screen

1. Select computer user "admin"

2. Enter password (user must ask the beamline scientist)

1.2 Labview Data Acquisition Program

This program opens automatically after the user logs in and it displays 2 windows, the experimenter or User.vi window and the Monochromator Scan window as shown below.
(if the windows do not show, double click on the "mainprogram.vi" desktop icon)

1.2.1 Experimenter or User.vi Window

If the name of the user is already in the window:

1. Highlight the experimenter by clicking on the name as shown below

2. Click on "Select" and the Monochromator Scan window with show the experimenter name under "User"

If the user is new:

1. On the User.vi window click on "Add" and a AddUser.vi window will appear

2. Enter the information require and click "OK"

3. The directory field should be filled. If it's a new directory it will ask:

The directory will be located at C/:Scan Data/

Another way to open the experimenter or User.vi window from the menu bar:

1. Click on "Setup"

2. Select "User"

1.2.2 Monochromator Scan Window (MSW)

Under the set up menu click on:

Project:

1. Click on "Add" file

2. Type the name of the project

3. Click on "New" under Select File to create a new file

4. Click "OK". The AddProj.vi window has a file now as shown below

Sample:

1. Click on the "+" sign

2. Click on "New" button

3. Enter name of sample

4. Click on "Enter"

Note: the user can type notes in the Description space


5. When finished click on "Add".The sample has been added to the list.



6. Click on "Select". The sample has been added to the Monochomator Scan window as shown.



Signals:


Digital or analog channels will be selected depending on user's experiment


1. Click on "Setup" on menu bar of MS window


2. Click on the signal. A check mark will show on the left side



3. Click on "Select". This information will appear in the MSW



 Back in the MSW:


 1. Under "Show", click on circle to show data graph



 2. Under "Show", click on box to show time/signal chart recorder





3. Under "Target" highlight to type the photon energy requested.




4. Click on green arrow

1.2.3 Tune Up Screen

The user can get to the Tune Up Screen.vi window from the menu bar of the MSW.

1. Click on "Feedback" menu

2. Click on "Enable Chi" to move the beamline side to side

Chi dial is highlighted

3. Go to the back of the beamline

4. Look through the slit window to make sure light is parallel to slot

5. Then adjust Chi in the tune up computer screen using the dial

6. Adjust the maximum light by using the theta dial (moves the beam up/down)

7. When:
 beamline reflected on the slit is parallel to the edge of the slit, and
 light is maximized, the reflected beamline on the slit is the brightest, then

8. Proceed to align the chamber
Note: See the endstation's chapter when using the beamline's endstations

1.2.4 Quadrant Photodiode

1. Turn the feedback off in the tune up window (see 1.1.2.3).

2. Using the feedthrough, remove the photodiode out of the way.

3. Set Chi:

In the four-jaw slit chamber look thru the window. The beam should be paralell, centered and in front of the slit. If these conditions are not met then adjust the dial in the tune up window (see 1.1.2.3).

4. Set Theta:

To set Theta to the maximum value, go to the tune up window (see 1.1.2.3) and adjust the dial until it shows the maximum value.

5. Align the quadrant diode to the beam by adjusting the numbers in the feedback readout chassis.

The top and the bottom numbers are Theta and should be equal. The right and left numbers are Chi and should be equal.

If the numbers are not equal:

- Adjust Theta manually using the feedthrough.

- Adjust Chi manually using the crank handle in the optical table.

6. Using the slit chamber feedthrough, remove the slit to allow beam thru.

7. Turn the feedback on the tune up window "on" (see 1.1.2.3).

8. Below are the electrometers where the feedback readout comes from.

 

1.3 Data Collection

1.3.1 Scan Ranges

Click on icon for "set/load San Parameters" on main display:
1. Select number of scan regions (enter number or scroll).  Usually only one is sufficient for simple scans.
2. Select a region to edit (highlight)
3. Click on "Enter" to save (it takes a couple of seconds to settle)
4. Click on "Done" (values selected will show in the lower left corner of the main display)

1.3.2 Channel Selection

1. Select "Set up"
2. Click on "Signals"
3. Check signal user wants to report

Note: Isignal, Izero, User2, User3 are analog channels. Counter 1-15 are digital. BeamCurrent is ring current. BPM vertical/horizontal are not used.

4.Click on "Select"

Note: there is a Signal section in the Monochromator scan window.

1.3.3 Channel Signal Tester/Chart Recorder

This is a widow that opens when the user clicks on the box next to signal in the signal section of the Monochromator scan window.

1.3.4 Data File Format

ASCII and tab delimited.

When the user opens a data file there are 2 numbers on the top left of the file. The first one is the number of channels monitored or collected. The second is the sequence number. See 1.1.3.6 Saving Data Files for nomenclature.

1.3.5 Retrieving Data Files

Data files are saved under "C\:Scan Data\user name\Text\name of file"

Note: see 1.1.3.6 Saving Data Files for nomenclature.

There is a short cut on Desktop called Scan Data in the Data Acquisition computer.

1.3.6 Saving Data Files

The program automatically names and saves data files.

The nomenclature is year, month, day, and sequence number starting at 000.

1.3.7 Printing Plot of Live Data

To print a plot of the data file while TAKING data in the Monochromator scan window in the signal section.

Click on the "Show" open circle next to the signal name. A window shows up displaying the data.

Under "File" click on window a label will print in the label printer next to the left monitor.

1.4 Vacuum Valves Controls

1. Double click on the valve control icon on desktop
2. Click on the valve
3. Choose open or close to operate the valve

Note: when the user opens a valve the color changes from red to green and vice versa.