Status of the Undulators instalation at DESY Gergana Angelova, Uppsala University, DESY

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Status of the Undulators instalation at
DESYGergana Angelova, Uppsala University, DESY
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Main Points

• Time Schedule
• Mechanical Support for the Undulators
• Water Cooling
• Power Supply
• Field Tests

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Instalation Groups for the optical replica
synthesizer
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Time Schedule

• February (week 6 to 8)- Delivering the mechanical
  support of the Undulators
• Beginning of March (week 10)- Delivering the
  undulators at DESY
• End of March (week 13,14,15)- Field tests of the
  undulators at DESY
• April/May Start of installing the undulators on
  place in FLASH
• - water
  connections
• - power supply
• - unexpected

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Plan for delivering of the Undulators
Delivering time for the undulators 26 February
- 04 March 2007
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Water Cooling

• All joints to the coil conductor (water and
  current connections) must be brazed.
• The coil will be cooled with demineralised water
  (specific resistance 106Ocm)
• The inlet temperature of the cooling water is
  30C
• The maximum flow velocity of the water must be
  below 2 m/s.

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Water Cooling

• Water connectors samples sent to SCANDITRONIX
• for manufacturing the rest of them.
• - 56 Nipples
  size 13mm (28 coils x 2 undulators)
• - 4 Nipples
  size 19 mm
• 60 Thermo switches received from DESY and will be
  send to SCANDITRONIX
• Rubber tubes (HOST) with sizes of 13 and 19 mm
  will be send from DESY to SCANDITRONIX as soon as
  the last know the exact length.

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DESY
Stainless tube H2O in or out
SCANDITRONIX
Swagelok
Hose - 13mm
Hose -19mm
Nipple
Thermo switch Pilotherme
Nipple
COIL
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Power Supply

• The two coils at the respective end of the
  undulator should be powered by independent power
  supplies
• Scanditronix will borrow power supply for another
  company to performed the tests. ?
• Scanditronix can power the upper and lower yoke
  in parallel to meet the upper limit of 0.5T ?.

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Field Tests

• Let us name the peak field in the 10 equal poles
  Bo. The field in the outmost entrance pole B1,
  second outmost pole B2 and the field in the
  outmost exit pole B3.From the start B1 and B3
  should be tuned to ¼Bo and B2 to ¾Bo.
• All measurements according below should be done
  with Bo 0.1 0.2 0.3 0.4 and 0.5T
• Field tests at DESY (week 13-15)
• Measuring
• - coil Upper right
• - only one component- vertical
• Measuring the field across a pole at DESY at
• 0.1T, 0.2T, 0.3T, 0.4T and 0.5T
• - longitudinal step 2mm and
• - positions X 15 mm, 0, and -15mm
• The manufacturer of the undulator must state
• Which iron he will use ?
• The remanence ?
• Coercive force ?
• saturation must ?

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