The following questionnaire is from Dr. Johannes Bahrdt, Group Leader of 
Working Group IV, Insertion Devices for Future Light Sources.

Everyone is encouraged to send the data as soon as possible either by e-mail 
or FAX to the following:

        E-mail: BAHRDT@BESSY.DE
         
        FAX:    0049-30-6392-2989

To e-mail: Select all text, copy it, then paste it into a new e-mail message.
           Key in information, and send to the e-mail address below.
           
To FAX: Print this file, type or print information on paper copy, and FAX to 
        the number below.

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MEASURED PERFORMANCE DATA OF THIRD-GENERATION INSERTION DEVICES


We plan to collect the performance data of existing third-generation insertion 
devices in advance of the workshop. The data will help to define the limits 
and problems of today's insertion device technology. 

The data will be summarized in four tables; however, the tables cannot cover 
all devices.  If similar devices exist at one facility (similar in period, 
length, etc.), only the data of one representative device should be given.

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TABLE 1: Out-of-vacuum permanent magnet insertion devices
   	 (Pure permanent magnets and hybrids)

   Name of insertion device:

   Design: ___ pure permanent
           ___ hybrid type: ___ straight  ___ wedged pole
           ___ planar type
           ___ helical type
           ___ other; specify:____________________

   Period length:

   Number of periods:

   Minimum magnetic gap:

   Field at minimum gap:

   Rms field error at minimum gap:

   Rms phase error at minimum gap:

   Good field region (+/- 30mm if possible):

   First field integrals within good field region:

   Second field integrals within good field region:

   Fitting region for multipoles:

   Amount of skew quad, normal and skew sextupole, 
      and normal and skew octupole at minimum gap:	
	
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TABLE 2: In-vacuum permanent magnet insertion devices
   	 (Pure permanent magnets and hybrids)

   Name of insertion device:

   Design: ___ pure permanent
           ___ hybrid type: ___ straight  ___ wedged pole
           ___ planar type
           ___ helical type
           ___ other; specify:____________________

   Period length:

   Number of periods:

   Minimum magnetic gap:

   Field at minimum gap:

   Rms field error at minimum gap:

   Rms phase error at minimum gap:

   Good field region (+/- 30mm if possible):

   First field integrals within good field region:

   Second field integrals within good field region:

   Fitting region for multipoles:

   Amount of skew quad, normal and skew sextupole, 
      and normal and skew octupole at minimum gap:	
	
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TABLE 3: Electromagnetic devices

   Name of insertion device:

   Design: ___ pure permanent
           ___ hybrid type: ___ straight  ___ wedged pole
           ___ planar type
           ___ helical type
           ___ other; specify:____________________

   Period length:

   Number of periods:

   Minimum magnetic gap:

   Field at minimum gap:

   Rms field error at minimum gap:

   Rms phase error at minimum gap:

   Good field region (+/- 30mm if possible):

   First field integrals within good field region:

   Second field integrals within good field region:

   Fitting region for multipoles:

   Amount of skew quad, normal and skew sextupole, 
      and normal and skew octupole at minimum gap:	
	
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TABLE 4: Superconducting undulators

   Name of insertion device:

   Design: ___ pure permanent
           ___ hybrid type: ___ straight  ___ wedged pole
           ___ planar type
           ___ helical type
           ___ other; specify:____________________

   Period length:

   Number of periods:

   Minimum magnetic gap:

   Field at minimum gap:

   Rms field error at minimum gap:

   Rms phase error at minimum gap:

   Good field region (+/- 30mm if possible):

   First field integrals within good field region:

   Second field integrals within good field region:

   Fitting region for multipoles:

   Amount of skew quad, normal and skew sextupole, 
      and normal and skew octupole at minimum gap:	
	
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