foyer

English translation: focal spot

GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
French term or phrase:foyer
English translation:focal spot
Entered by: Aoife Ní Chinnéide

11:04 Aug 23, 2012
French to English translations [PRO]
Tech/Engineering - Electronics / Elect Eng
French term or phrase: foyer
Hello. This crops up in a text on the manufacture of X-ray tubes and the standards to which they must comply.
I'm not sure what "foyer" means in this specific context:
“Règles concernant les tubes radiogènes et les gains.
Enumération des caractéristiques
Pour les tubes :
La haute tension nominale pour utilisation sur générateur à haute tension symétrique et suivant l’utilisation spécifiée par le constructeur ;
La ou les pentes de l’anode ;
La capacité thermique nominale d’anode.
Pour les tubes de diagnostic, en plus des caractéristiques énoncées en-dessus :
- La désignation du foyer, qui sera défini soit par son qualificatif soit par ses dimensions nominales, soit par ces deux expressions.
[…]
Qualificatif des foyers :
Fin
Petit
Grand"
Many thanks in advance for any help or suggestions :)
Aoife Ní Chinnéide
Local time: 22:07
focal spot
Explanation:
Region of the anode on which the electrons from the cathode are focused to produce X-rays by collision
http://www.ndt-ed.org/EducationResources/CommunityCollege/Ra...
"A focusing cup is used to concentrate the stream of electrons to a small area of the target called the focal spot. The focal spot size is an important factor in the system's ability to produce a sharp image"

Also called "focus" see last reference below, this is why I had approved Kashew's suggestion

Bilingual document in Canada:
http://www.gazette.gc.ca/archives/p2/2006/2006-06-14/html/so...

This tri-lingual document from a manufacturer has the requested entry Focal spot->Foyer:
http://www.iae.it/TAMA/files_db/pdf/DS/RTC165_DS94.pdf
Selected response from:

Didier Fourcot
Local time: 23:07
Grading comment
Many thanks to all answerers. Having looked into "focal spot", it does indeed seem to be the best option.
4 KudoZ points were awarded for this answer



Summary of answers provided
4 +1focus
kashew
4 +1target
chris collister
4focal spot
Didier Fourcot
3coil
narasimha (X)


Discussion entries: 1





  

Answers


34 mins   confidence: Answerer confidence 3/5Answerer confidence 3/5
coil


Explanation:
*

narasimha (X)
India
Local time: 02:37
Specializes in field
Native speaker of: English
PRO pts in category: 49
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44 mins   confidence: Answerer confidence 4/5Answerer confidence 4/5 peer agreement (net): +1
focus


Explanation:
*

--------------------------------------------------
Note added at 46 minutes (2012-08-23 11:50:43 GMT)
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From a linguee search:

les dimensions de la source et le foyer optique des rayons X
nrcan-rncan.gc.ca

source size and effective x-ray focal spot size
nrcan-rncan.gc.ca


kashew
France
Local time: 23:07
Native speaker of: Native in EnglishEnglish
PRO pts in category: 100

Peer comments on this answer (and responses from the answerer)
agree  Didier Fourcot: Optically correct, this should be the enswer for a physicist reader: spot where the X-rays are focused
3 hrs
  -> Thank you - but is "focal spot" better?
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49 mins   confidence: Answerer confidence 4/5Answerer confidence 4/5 peer agreement (net): +1
target


Explanation:
Source: http://www.medicalorama.com/encyclopedie/15641: "La source d'électrons des tubes à RX est un filament (cathode) porté à incandescence et la quantité des RX produits dépend de l'ampérage de ce courant chauffant le filament. L'anode, la cible (ou foyer) de ce faisceau d'électrons, est une plaque de tungstène. Le tube est enfermé dans une gaine plombée et seule une fenêtre découpée dans cette enveloppe, laisse passer les RX"

--------------------------------------------------
Note added at 54 mins (2012-08-23 11:58:51 GMT)
--------------------------------------------------

Here's another ref.:http://www.tpe-rayons-x.sitew.com: "La cathode libère des électrons qui se dirigent directement sur l’anode en la frappant violemment, car les électrons étant négatifs et l’anode positive, il y a une attirance entre les deux. La surface de bombardement des électrons sur l’anode s'appelle le foyer.

chris collister
France
Local time: 23:07
Specializes in field
Native speaker of: Native in EnglishEnglish
PRO pts in category: 353

Peer comments on this answer (and responses from the answerer)
agree  Terry Richards: Looks pretty convincing to me!
11 mins
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21 hrs   confidence: Answerer confidence 4/5Answerer confidence 4/5
focal spot


Explanation:
Region of the anode on which the electrons from the cathode are focused to produce X-rays by collision
http://www.ndt-ed.org/EducationResources/CommunityCollege/Ra...
"A focusing cup is used to concentrate the stream of electrons to a small area of the target called the focal spot. The focal spot size is an important factor in the system's ability to produce a sharp image"

Also called "focus" see last reference below, this is why I had approved Kashew's suggestion

Bilingual document in Canada:
http://www.gazette.gc.ca/archives/p2/2006/2006-06-14/html/so...

This tri-lingual document from a manufacturer has the requested entry Focal spot->Foyer:
http://www.iae.it/TAMA/files_db/pdf/DS/RTC165_DS94.pdf

Example sentence(s):
  • http://www.termiumplus.gc.ca/tpv2alpha/alpha-eng.html?lang=eng&i=1&index=frt&srchtxt=TUBE%20FOYER%20LINEAIRE
  • http://www.prior-ip.com/application/33299976/

    Reference: http://www.medcyclopaedia.com/Home/library/radiology/chapter...
Didier Fourcot
Local time: 23:07
Works in field
Native speaker of: Native in FrenchFrench
PRO pts in category: 43
Grading comment
Many thanks to all answerers. Having looked into "focal spot", it does indeed seem to be the best option.
Login to enter a peer comment (or grade)



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