MOS Slit Cutting Test-3
Tokoku
10/17/2006 Updated

---------------------------------
Test procedure 
---------------------------------

   ( 1 ) Find best parameters.
>>>( 2 ) Make many slits with different widths at different position.
>>>( 3 ) Measure the slit widths with microscope and
         determine relation between inputs versus outputs of the laser.
   ( 4 ) Cooling test with CIAO test dewar if anodized mask will be used.
   ( 5 ) Cooling test in MOIRCS with stars and pinhole-mask
         if anodized mask will be used.

   ( - ) Ask for Yutani-san for cutting anodized material with laser.
         ( Exhaust instrument might be different. )

------------------------------
Tests & Results
------------------------------

w/MOIRCS frame, 1-time cutting for each slit, current=22A, marking speed=1mm/s, Qsw=1kHz, feed speed=6mm/m




Input [mm]
Output [um]
Enlarged view [um]


0.03
  




0.05
  




0.1
 
  


0.15
  
  


0.20
  
  


0.25
  
  

0.30
  
  


0.35
  
  



* The width are measured at backside of the mask.
* The data with width of >0.1mm are not used for fitting
  since they have no guaranteed accuracy.
* Slit direction is horizontal. 

 old

------------------------------
Comments
------------------------------
22A, feed speed=10mm/m, 4-time cutting, width=0.3mm