You are viewing an old version of this page. View the current version.

Compare with Current View Page History

« Previous Version 7 Next »

This serves as a guide for moving the Jungfrau detector off and onto the DSA location.


NOTE: It is good practice to check that vacuum levels are at atmospheric conditions (760 torr) prior to disconnecting flanges. This should be checked on the control screens and manual gauges.

  1. Disconnect both 14" flanges on each end of the Jungfrau. The screws will act as guide posts for pulling back the bellows. Note: There were interference issues with the Optique Peter, on the top 4 screws of the flange, located in the +z direction. 
  2. Slowly pull back the bellows and secure the 3 handles onto the lead screws and foil off all vacuum side components. This requires a minimum effort of 2 people.

                                                                                                             

3. Physically ensure the detector is clear of the gate valve by moving it in the (+z)-direction. Secure the temporary detector cover by zip tying the cover to the bellow handles.

Note: Make sure the mechanical lock(between the detector stand and SC2 chamber) for the gate valve is in place. Keep hands and tools clear of the gate valve zone.

Crane preparation for the 14" flange+stand:

  1. Remove all 4 bolts securing the stand to the platform. Note: Consult the CXI crane book for the most current lift plan and check for completion of the daily crane inspection.

                                                                                                             

Removal of the 2 Turbos:

  1. Remove the flange sitting on top of the 2 turbos to gain access to the bracket holder port. This secures the umbilical cord located inside the Jungfrau.  

                                         

2. 3 silver plated bolts are removed to disengage the bracket holding the umbilical cord. These are no longer capture and release screws. Make sure the foreline is disconnected and all other cables are removed prior to craning. Note: Consult the CXI crane book for the most current lift plan for removing the turbos and check for completion of the daily crane inspection.

                                                                                                               


Removal of the attenuator stick:

Preparing to move the detector off the beamline:

  1. Secure the 80/20 U-Frame bracket to the blue cart and prepare the detector by ensuring all cables and necessary lines(ie waterlines) are disconnected. Communicate with the detector group, as necessary for shutting down the Jungfrau.This was created to make space for the cage(containing cables) sitting under the Jungfrau detector.

2. Crane the detector according to the CXI Lift Plan. Secure the detector using clamps as shown in the image.

                                                       

3. Prepare for internal inspection of the detector by adding further protection to the face of the detector and pushing the bracket arm for easier access.

Note: The face of the detector consists of a thin film of mylar that is easily scratched. A minimum effort of 2 people is highly recommended.

This is done by carefully cutting the zip ties and removing the temporary shielding. The 3 screws going through the face of the detector shielding into the can are removed, as shown in image 14. The firm shield is placed and secured with 3 in-vacuum screws.

Image 14. Firm detector shield cover for the Jungfrau.




This guide is still in progress.



  • No labels