CHESS Wigglers
Procedures for Enabling

Occasionally the position (gap opening) information of a wiggler is lost (this is due to the control electronics losing power or having been disabled). When this occurs, we have to reset the electronics so that if required the wigglers can be opened for machine studies etc.  We should do this at the next convenient time for an access in order to:

• Ensure no foreign matter (e.g.. nuts, bolts, etc.) have been placed on any of the I beams of the wiggler.

• Ensure that nothing (e.g.. bolts etc.) is in the path of any of these I beams, and that nothing besides the vacuum chamber is between the wiggler jaws.

• Ensure that the wiggler safety switch at the wiggler is in the ON position.
  
  

At the wiggler controls
Rm135.R9 for CHESS West/G-line Wiggler
Top of D1 control rack in CHESS East for the CHESS East Wiggler

• Place the controls to CHESS with the control key (this key may be found in the CHESS general key box)

• Hit the Home position button to send the wiggler home and thus calibrate.

• Send the wiggler to the open position by hitting the open button.

• Send the wiggler to the closed position by hitting the closed button. (if this is the desired position)

• Place the control key in the CESR control position and lock key in general key box.

• Request the CESR operator test the CESR controls to ensure they have control by opening and closing the wiggler from the control room.

• Note this activity in the CESR elog.

• Note this activity in the CHESS webboard.

Procedures for Disabling the CHESS Wigglers

Occasionally there is a desire to disable the wigglers.
To do this:

• Insert wiggler control key into wiggler control panel and put in the CHESS control position.
  (replace the key in the CHESS general key box)

• Send the wiggler to the desired position by hitting the appropriate button if it isn't already there.

• Disable wiggler by either turning off power switch at wiggler control or

• Disable wiggler by placing safety switch at wiggler in the OFF position.

• Place yellow tags on these switches to inform others as to why this work has been done.

• Note this activity in the CESR elog.

• Note this activity in the CHESS webboard.

Procedures for Changing the CHESS Wiggler Gap

If the wiggler needs to be opened to a position other than those described above get assistance from Dana Richter. This procedure requires connecting a laptop computer (one with the software on it) and programming the position. There is also a "manual" way of jogging the wiggler into position with special controls.

Last Update: 2008-04-03