F7 tally vs. power distribution

In summary, the conversation is about estimating assembly wise power distribution of a pwr core. The question is whether the F7 tally directly corresponds to power distribution or if additional calculations are needed. The response is that F7 is an fission energy deposition tally and should normalize to give the same normalized power distribution. In MCNP, the term "fission energy deposition" is used instead of power due to the missing time unit in the neutron flux. The term "power" is commonly used in nuclear reactor nomenclature. The speaker asks if the tally is normalized to 1 or to the average value of the F7 tally. They also inquire about any alternate methods for calculating power distribution.
  • #1
Amjad78
21
0
Hello Everyone
Hope you will be fine
I am trying to estimate assembly wise power distribution of pwr core. Can anyone let me know if F7 tally correspond directly to power distribution or else i need some additional calculations?
 
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  • #2
F7 is an fission energy deposition tally, as opposed to power, but it should normalize to give the same normalized power distribution.

In MCNP the term fission energy deposition is used as the neutron flux is not sampled in physical units of cm-2s-1 but in cm-2 per source neutron. Because of the missing time unit the term energy deposition is more correct. Nonetheless, we will often use the term power as it is normally used in nuclear reactor nomenclature.
Ref: http://www.aesj.or.jp/publication/pnst002/data/866-871.pdf
 
  • #3
Dear Astronuc thank you for your kind reply Tally normalized to 1 or normalized to average value of the F7 tally? and can you tell me any alternate method of calculating Power distribution please.Regards

Amjad
 

FAQ: F7 tally vs. power distribution

What is F7 tally and how does it differ from power distribution?

F7 tally is a method used in science to measure the frequency of a specific event or outcome. It differs from power distribution, which is a statistical technique used to analyze the distribution of power in a system or group.

What are the practical applications of using F7 tally in scientific research?

F7 tally can be used in various fields such as biology, psychology, and sociology to measure the frequency of behaviors, events, or outcomes. It is commonly used in experiments to collect quantitative data and analyze the results.

How is F7 tally calculated and recorded?

F7 tally involves counting the number of times a specific event occurs and recording it in a tally chart. For example, if you are recording the frequency of a certain behavior, you would mark a tally for each occurrence of that behavior. After a set period of time, the tallies are counted and converted into numerical data for analysis.

What are the advantages of using F7 tally over other tallying methods?

F7 tally allows for more precise and accurate data collection compared to other tallying methods. It also allows for easy comparison and analysis of data, making it a useful tool in scientific research.

Are there any limitations to using F7 tally in scientific research?

One limitation of F7 tally is that it can only measure discrete events and may not be suitable for measuring continuous variables. It also requires manual counting and recording, which can be time-consuming and prone to human error. Additionally, F7 tally may not be appropriate for all types of research and may need to be supplemented with other methods for more comprehensive data collection.

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