ORTEC 572A Operating And Service Manual
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ORTEC 572A Operating And Service Manual

Spectroscopy amplifier
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Model 572A
Spectroscopy Amplifier
Operating and Service Manual
®
P r i n t e d i n U . S . A .
O R T E C
P a r t N o . 7 8 5 1 0 0
0 9 0 4
M a n u a l R e v i s i o n D

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Summary of Contents for ORTEC 572A

  • Page 1 Model 572A Spectroscopy Amplifier Operating and Service Manual ® P r i n t e d i n U . S . A . O R T E C P a r t N o . 7 8 5 1 0 0...

  • Page 2: Warranty

    Advanced Measurement Technology, Inc. ® ® a / k / a / O R T E C , a s u b s i d i a r y o f A M E T E K , I n c . WARRANTY O R T E C * w a r r a n t s t h a t t h e i t e m s w i l l b e d e l i v e r e d f r e e f r o m d e f e c t s i n m a t e r i a l o r w o r k m a n s h i p .

  • Page 3: Table Of Contents

    i i i C O N T E N T S W A R R A N T Y ................i i S A F E T Y I N S T R U C T I O N S A N D S Y M B O L S .

  • Page 4: Safety Instructions And Symbols

    SAFETY INSTRUCTIONS AND SYMBOLS T h i s m a n u a l c o n t a i n s u p t o t h r e e l e v e l s o f s a f e t y i n s t r u c t i o n s t h a t m u s t b e o b s e r v e d i n o r d e r t o a v o i d p e r s o n a l i n j u r y a n d / o r d a m a g e t o e q u i p m e n t o r o t h e r p r o p e r t y .

  • Page 5: Safety Warnings And Cleaning Instructions

    SAFETY WARNINGS AND CLEANING INSTRUCTIONS D A N G E R O p e n i n g t h e c o v e r o f t h i s i n s t r u m e n t i s l i k e l y t o e x p o s e d a n g e r o u s v o l t a g e s . D i s c o n n e c t t h e i n s t r u m e n t f r o m a l l v o l t a g e s o u r c e s w h i l e i t i s b e i n g o p e n e d .

  • Page 7: Description

    ORTEC MODEL 572A SPECTROSCOPY PILE-UP AMPLIFIER 1. DESCRIPTION o p e r a t i n g i n t o a n a c - c o u p l e d s y s t e m a t h i g h 1 .

  • Page 8: A C T I V E F I L T E R

    c a u s e s a n u n d e r s h o o t w h o s e p e a k a m p l i t u d e i s b a s e l i n e w i t h a n o s c i l l o s c o p e w i t h a m o n o e n e r g e t i c r o u g h l y d e t e r m i n e d f r o m : s o u r c e o r p u l s e r h a v i n g t h e s a m e d e c a y t i m e a s t h e p r e a m p l i f i e r u n d e r o v e r l o a d c o n d i t i o n s .
  • Page 9 F i g . 1 . 1 . D i f f e r e n t i a t i o n i n a n A m p l i f i e r W i t h o u t P o l e - Z e r o C a n c e l l a t i o n . F i g .

  • Page 10: Specifications

    F i g . 1 . 3 . P u l s e S h a p e s f o r G o o d S i g n a l - t o - N o i s e R a t i o s . 2.

  • Page 11: C O N T R O L S

    2 . 2 . C O N T R O L S 2 . 3 . I N P U T T e n - t u r n p r e c i s i o n p o t e n t i o m e t e r f o r T y p e B N C f r o n t a n d r e a r p a n e l c o n n e c t o r s G A I N I N P U T...

  • Page 12: Installation

    3. INSTALLATION b a s e l i n e w i t h a n o s c i l l o s c o p e a f t e r e a c h p u l s e 3 .

  • Page 13: S H A P I N G C O N S I D E R A T I O N S

    d i r e c t c o n n e c t i o n . W h e n a n y o n e o f t h e s e u n i t s i s i n a p p l i c a t i o n s w h e r e t h e b e s t s i g n a l - t o - n o i s e r a t i o u s e d , i t s h o u l d b e t e r m i n a t e d w i t h a 1 0 0 ( r e s o l u t i o n ) i s m o s t i m p o r t a n t , s u c h a s h i g h -...

  • Page 14: I N H I B I T O U T P U T C O N N E C T I O N

    r e c e i v i n g i n s t r u m e n t . S i n c e t h e i n p u t i m p e d a n c e o f r a t e a l l o w e d t o m a i n t a i n t h e l i n e a r o u t p u t i s t h e r e c e i v i n g i n s t r u m e n t i s n o r m a l l y 1 0 0 0 o r [ 2 0 0 0 0 0 c p s / τ...

  • Page 15: F R O N T P A N E L C O N N E C T O R S

    P O S / N E G A t o g g l e s w i t c h s e l e c t s a n i n p u t c i r c u i t t h a t a c c e p t s e i t h e r p o l a r i t y o f p u l s e s f r o m t h e p r e a m p l i f i e r .

  • Page 16: R E A R P A N E L C O N N E C T O R

    t h i s c o n n e c t o r i s a b o u t 0 . 1 . L i n e a r r a n g e o f 0 t o S e t t h e 5 7 2 A c o n t r o l s i n i t i a l l y a s f o l l o w s : ±...

  • Page 17: B L R T H R E S H O L D A D J U S T M E N

    c o m p a r e d a s s h o w n i n F i g . 4 . 4 t o a c h i e v e e x c e l l e n t p o l e - z e r o c a n c e l l a t i o n .
  • Page 18 F i g . 4 . 4 . P o l e - Z e r o A d j u s t m e n t U s i n g a S q u a r e W a v e I n p u t t o t h e P r e a m p l i f i e r . t h e s w i t c h c a n b e s e t a t T h r e s h o l d a n d t h e m a n u a l o u t p u t .
  • Page 19 A l l o w e x c i t a t i o n f r o m a s o u r c e o f k n o w n e n e r g y ( f o r e x a m p l e , a l p h a p a r t i c l e s ) t o f a l l o n t h e d e t e c t o r . A d j u s t t h e a m p l i f i e r g a i n a n d t h e b i a s l e v e l o f t h e b i a s e d a m p l i f i e r t o g i v e a s u i t a b l e o u t p u t p u l s e .
  • Page 20 2 . 3 5 E r m s d i a l N ( F W H M ) w h e r e E i s t h e p u l s e r d i a l r e a d i n g i n M e V a n d d i a l 2 .
  • Page 21 F i g . 4 . 9 i s p r e f e r a b l e . T h e d e t e c t o r i s g r o u n d e d a s C U R R E N T - V O L T A G E M E A S U R E M E N T S F O R S i i n n o r m a l o p e r a t i o n a n d t h e m i c r o a m m e t e r i s a n d G e D E T E C T O R S...
  • Page 22 F i g . 4 . 1 1 . S y s t e m f o r H i g h - R e s o l u t i o n A l p h a - P a r t i c l e S p e c t r o s c o p y . S C I N T I L L A T I O N - C O U N T E R G A M M A 4 .
  • Page 23 F i g . 4 . 1 4 . H i g h - R e s o l u t i o n X - R a y E n e r g y A n a l y s i s F i g .
  • Page 24 F i g . 4 . 1 6 . G a m m a - R a y C h a r g e d - P a r t i c l e C o i n c i d e n c e E x p e r i m e n t . F i g .

  • Page 25: C I R C U I T D E S C R I P T I O

    F i g . 4 . 1 8 . G a m m a - G a m m a C o i n c i d e n c e E x p e r i m e n t . 5.
  • Page 26 F i g . 5 . 1 . A m p l i f i e r B l o c k D i a g r a m .

  • Page 27: M A I N T E N A N C

    F i g . 5 . 2 . T i m i n g R e l a t i o n s i n t h e 5 7 2 A A m p l i f i e r a n d P i l e - U p R e j e c t o r .
  • Page 28 V a r y t h e D C A d j c o n t r o l o n t h e f r o n t p a n e l w h i l e m o n i t o r i n g t h e U n i p o l a r o u t p u t . E n s u r e t h a t t h e b a s e l i n e c a n b e a d j u s t e d t h r o u g h a r a n g e o f + 0 .
  • Page 29 a t O R T E C , ( 8 6 5 ) 4 8 2 - 4 4 1 1 , b e f o r e s e n d i n g i n a n N O I S E M e a s u r e t h e n o i s e a t t h e a m p l i f i e r U n i p o l a r i n s t r u m e n t f o r r e p a i r t o o b t a i n s h i p p i n g i n s t r u c t i o n s o u t p u t w i t h m a x i m u m a m p l i f i e r g a i n a n d 2 s...
  • Page 30 B i n / M o d u l e C o n n e c t o r P i n A s s i g n m e n t s F o r S t a n d a r d N u c l e a r I n s t r u m e n t M o d u l e s p e r D O E / E R - 0 4 5 7 T .

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