Hardware/Cable Changes for Switching Target Rooms

From the Tandem Target Room to the LINAC Target Room

Ensure all appropriate supplies are off!

1. The Slit Stabilization Amplifier is shared between the Tandem and LINAC 90◦ magnets. Unplug the 110 volt power cord and disconnect the output signal cable D-type connector from the amplifier and terminate it at the LINAC Slits Connector Box. Detach the two coax cables from the image slits and move the amplifier to the LINAC 90◦ magnet image slits. Connect the coax cables to the image slits; ensure that the H.E. and L.E. slits are coupled to the correct amplifier inputs. Connect the Cannon connector to the slit amplifier; it should be laying in the vicinity of the image slits. Plug the 110 volt power cord into a receptacle.
2. Check the external second stripper in the LINAC hall for the presence of a foil in the beam path and the condition of the foil if stripping to a higher charge state is required.
3. Open each Tandem 90◦ magnet object slit to 0.2” on both the horizontal and vertical pairs.
4. The switching magnet in the Tandem Target Room uses the same power supply as the magnet which serves the LINAC Target Room. Ensure the supply is turned off in the Control Room. The power supply and the enclosure housing the beam routing knife switches are located in the Tandem Vault, in the rack to the North of the H.E. entrance. The output of the supply is switched to the Tandem Target Room switching magnet with the top knife switch and the polarity for the correct beam deflection with the bottom.
5. Ensure both the LINAC 90◦ and switching magnets have cooling water (cooling lines should be cool to the touch).
6. Close the Tandem Target Room switching magnet beamline valve. Ensure the vacuum in the Tandem 90◦ magnet, H.E. beam line and LINAC line are below 1 x 10−5 torr. If this is so, open the hand valve before the 90◦ magnet and the LINAC line pneumatic valve.
7. To degauss the old 90◦ magnet rundown the current at the control panel, change the deflection for the reverse mode, increase the magnet current a few amps, then back down and return to the normal deflection mode.
8. In the Control Room, exchange the input connector for the Gauss Meter from the one for the Tandem to that labeled for the LINAC.
9. Control of deflectors D-1, D-2, QIII-A and QIII-B is obtained by dropping the switch at the bottom of rack F to the position labeled LINAC. Ensure the appropriate supplies are off before making the switch.
10. The beam chopper for the LINAC should have the amplifier turned on in the Tandem Vault, Southwest of the Tandem Target Room 90◦ magnet. Ensure the drive signal for the amplifier in the Control Room LINAC electronics rack is unplugged when first tuning beam.
11. Turn around the sign on the LINAC Hall entrance door to indicate the presence of beam and then secure the door so that entry can only be made via the control room. Close the gate separating the Tandem target room from the LINAC Target Room.

From LINAC Target Room to Tandem Target Room

Ensure all appropriate supplies are off!

1. The Slit Stabilization Amplifier is shared between the Tandem and LINAC 90◦ magnets. Unplug the 110 volt power cord. Remove the amplifier output signal cable multi-pin Cannon connector and lay it down in the cable tray. Detach the two coax cables from the image slits and move the amplifier to the Tandem 90◦ magnet image slits. Connect the coax cables to the image slits; ensure that the
2. H.E. and L.E. slits are coupled to the correct amplifier inputs. Remove the Cannon connector from the LINAC Slits Connector Box and connect it to the slit amplifier box. Plug the 110 volt power cord into a receptacle.
3. Close each horizontal object slit to 0.115” on the Tandem 90◦ magnet. Open the vertical object slits all the way.
4. The beam chopper for the LINAC should have the amplifier turned off in the Tandem Vault, Southwest of the Tandem Target Room 90◦ magnet.
5. The switching magnet in the Tandem Target Room uses the same power supply as the magnet which serves the LINAC Target Room. Ensure the supply is turned off in the Control Room. The power supply and the enclosure housing the beam routing knife switches are located in the Tandem Vault, in the rack to the North of the H.E. entrance. The output of the supply is switched to the Tandem Target Room switching magnet with the top knife switch and the polarity for the correct beam deflection with the bottom.
6. Ensure that both Tandem 90◦ and switching magnets have cooling water (cooling lines should be cool to the touch).