Xcalibur II manual

MAINTENANCE INSTRUCTIONS

3. Record details of the test in the local radiation log, stipulating the date, person testing, outcome and signature.

9.13 Checking the X-ray Radiation Levels

Task Time:

20 minutes

When:

Once a month

Tools:

Radiation meter

Procedure

1. With the X-ray generator on (at normal settings) and the shutter closed, use the radiation meter to sweep the area around the X-ray tube housing, fast shutter and collimator for any radiation leak (inside the enclosure).

2. Close the protective enclosure doors and open the X-ray shutter (command sh o in CrysAlis

CCD)

3. Sweep the outside of the enclosure using the radiation meter, paying particular attention to the plane of the X-ray tube, the area of the secondary beam stop (mounted on the enclosure window) and the door seals.

4. Record details of the test in the local radiation log, stipulating the date, person testing, outcome and signature.

9.14 CCD Detector – Pumping Out Vacuum

Task Time:

16 hours

When:

Once a year

Tools:

Special ‘T’ tool

1 set of Allen keys

Rotary vacuum pump capable of obtaining a pressure of 1x10

-1

mbar

Vacuum tubing and adaptor

Procedure

1. Switch off the cooling water / KMW200CCD chiller unit.

2. Detach water pipes from top of CCD detector (these are self-sealing, although there may be a few drops of water, have something absorbent to hand)

3. Unscrew top access plate of CCD detector (See figure 9.14.1 for details of specific CCD detector).

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Sapphire 2

MAINTENANCE INSTRUCTIONS

Access plate of Sapphire 2 CCD detector removed. Secured by one screw at centre.

Pump out port (with ‘T’ tool attached)

Sapphire 3

Access plate of Sapphire 3

(false front to head – spring loaded). Secured by 4 grub screws at corners (2 shown).

Pump out port (with ‘T’ tool attached)

Onyx

Pump out port (with cover unscrewed)

Figure 9.14.1 View of the access plates and pump out ports of the Sapphire and Onyx CCD detectors

4. Screw into place the ‘T’ tool.

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