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I. Introduction

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The IMS Control panel (Figure 3): Provides access to utilities/editors via drop-down menus.

Figure 3. Control Panel Drop Down menus.

START button will allow the user to begin measurements. Section Information window (Figure 4) will pop up.

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Figure 4.

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 Section Information window.

B. Instrument Calibration

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1.  Select the tab labeled DARK-1 (Figure 5).
   1. The default exposure values are automatically displayed and are the recommend values, but you may set other values. Be aware that the dark saturation (image intensity saturation) must be 7% or lower and you need to capture at least 100 images for stacking. 
   2. Default Recommended values are Image stack: 10020, kV: 8060, mA: 0.73, Integration Time: 1 ms
2. Click the Take DARK Image button.
   1. The X-Ray Image Acquisition window will open (Figure 7).  During acquisition, the image window appears black but you will see values in the histogram and in the image line profile.

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1. Select the tab labeled WHITE-2 (Figure 8). 
   1. The default exposure values are automatically displayed and are the recommend values, but you may set other values. Just be aware that the maximum intensity cannot exceed 99%. 
   2. Default Recommended values are : Image stack : = 20,   kV : 112=80, mA: =1.0, Integration Time : 12 ms= 30
2. Click the Take WHITE Image button.
   1. The X-Ray Image Acquisition window will open (Figure 9).
   2. During acquisition, the image window appears white shading to darker grey on the left and right edges.

Once acquisition is completed, you will be return to the FPD Calibration Utility window.

3. Check the maximum saturation value and confirm that it is in the target range of 94-98%. If not, adjust the exposure values and repeat (Figure 8).

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1. Ensure the values in the window are set as shown in Figure 14.
   1. The instrument X-offset is measured from the home switch to the center pixel of the detector (Figure 15).
   2. This value must be updated should the detector position change or if the home switch on the track is modified.
2. Click ACCEPT to save the changes and write them to the configuration file.  Click Cancel to revert to previous values.

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Figure 14. XMSL Parameters Window.

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Note: All core sections entering the NGR XMSL must be completely dry. Any moisture or liquid present will DAMAGE the instrument.

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Figure 21. Dialog when after user selects abort during imaging.  The x-ray source will automatically ramp down once abort is selected.  The section in the imager will need to be restarted from the beginning once abort is selected.

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G. IMS Utilities

a) XMSL: Image Utility

The image utility can be found under Instruments > XMSL: Image Utility (Figure 22).  This utility is useful for determining the proper voltage, current, and integration (exposure) time for imaging cores.  User can also review the processed images in this utility.

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Figure 22. General Image Utility User Interface Window.  This utility is used test exposure settings before imaging a section.  The histogram (upper left) will be displayed when the ROI box tool is used and the line profile (lower left) is displayed when the ROI line tool is used.

b) Automatic Image Processing - XMSL: Image Process Utility

Image Processing Utility has the following purpose:

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1. The axis of the source’s x-ray beam must centered on the detector and perpendicular to its surface.
2. The pixel to centimeter scaling factor must be determined.  As of X379 this value was determined to be 109.6px/cm when measured at the half-core height. A grid standard is available for use to repeat the measurement
3. In IMS, you must set the instrument offset to the center row of pixels of the detector.

c) XSCAN Automatic Image Processing

This utility was designed to be used on the XSCAN. During X396T in was implemented on the XMSL with the purpose of testing it in subsequent expeditions. 

The utility allows the user to have greater control over the process that is being applied to the images.

d) Manual Image Processing

The IODP processing algorithm is available in a Linux and PC version and can easily be placed on any work station.   This program allows the user to adjust the contrast and change settings related to instrument setup and geometry.  The processing software files must be placed in a directory above the location of the images to ensure file navigation will work.

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2. No images appear after selecting Process Images: The bit size or pixel length are not set correctly.  Check the command window for error messages and check the settings in the processing settings window.

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e) XMSL: View Last Images Utility

View Last Images utility can be found under Instruments > XMSL: View Last Images (Figure 45B).  This utility is useful review the characteristics of the selected images.

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Figure 45B. View Last Images utilily

III. Transferring Images to Data 1

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A.2 Maintenance and Troubleshooting

Trouble Shooting

B.1 IMS Program Structure

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Click Accept to save the values or Cancel to return to previous values.

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Figure 55. XMSL Motor and Track Options Setup Window

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Figure 56. Motion Utility Window

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Note, these values along with the detector position set in the Camera: General Setup under instruments must be accurate for proper motion control. Take care in setting these values.

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Figure 57. XMSL Fixed Positions Window

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• This panel is used to define the orientation of the track system, limit switches, and the home switch (Figure 58). The MDrive can be used with either a dedicated Home switch or a limit switch as a home switch. In the case of the XMSL track we use a home switch.
• Select Axis: In the case of the XMSL it is always X.
• Select Track and Home Geometry: For the XMSL, select CW look @ CCW Edge
• Click the Motion Utility button to test the settings.
• Click Accept to save the settings. Click Cancel to return to previous values.

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Figure 58. XMSL Limit and Home Switches Window

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Click Accept to save the settings. Click Cancel to return to previous values.

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Figure 59. Motion Profiles Window

The following table shows the motion profile settings for the XMSL.

Table: Motion Profile X-Axis for XMSL

C.1 Hardware

The IODP x-ray system is composed of a 120 kV, 1 mA constant potential x-ray source and a detector unit.  The source is a Teledyne ICM CP120B portable x-ray generator with a 0.8 by 0.5 mm focal spot.  The beam angle is 50 by 50 degrees generating a directional cone onto the detector, which is distanced 65 cm from the source.  The detector is a Go-Scan 1510 HR unit composed of an array of CMOS sensors with an active area of 102 by 153 mm and a resolution of 99 microns.

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C.2 System Settings

System Settings

System Resources

Settings

Attribute Categories

VI. Credits

All improvements to the Quick Start Guides and User Guides are a communal effort, with honorable mention to the group of LOs, ALOs, and technicians who have helped.

VII. Archived Versions

• X-Ray Image Logger

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• User Guide 397T 2022-09-28
• X-Ray Image Logger User Guide 2021 .pdf
• X-Ray Image Logger UG - 25022020