Recent content by DEvens

All birds must fly. Ostrich is a bird. Ostrich cannot fly. Your only way out is to modify one. (Or more than one.) No jobs that let you stay in state, work on what you want, and require your level of education. Guess what you need to do. You might be surprised how interesting industry work...

Here is one sci fi forum. https://scifi.stackexchange.com/ Though on occasion I have had a less than optimal opinion of stackexchange. I have seen YASID posts there. I think the first place I saw it was on usenet, but that seems a tad old fashioned these days.

Oh, sorry. Yet another story ID. DaveC426913 you got it in one. Thanks! It's even the web site I originally read it on.

I am recalling a short-short, maybe from the 1990s, maybe from an author's blog, maybe Orson Scott Card. Not sure about those details. The basics: a time traveller pops into an author's study, gives a bunch of predictions, then pops a year later. The predictions all come true. In the year-later...

@Alex A is correct, I was referring to NJOY and makxs. And I'm going to guess he is also correct (again noting I have never done it) that you won't need them. At least, if you can accept the temperatures of the supplied files. In many cases that will be true. In some cases it will not.

I don't have the info you want. I know the cross section libray program that comes with MCNP can do some of what you describe but I have never used it, just looked over the shoulder of the guy at our office who used to be our big expert. I had meant to learn it after that guy retired. Then I...

Apologies for responding to the 2 year old post. When you use CardSharp what do you write? So, for example, I want to make an input with the usual bunch of cells and bunch of materials and bunch of data cards and such. Will I be writing Python code? Presumably then the Python code calls...

Somebody who thinks humans are an epidemic might benefit from taking mind altering drugs.

If you have no way of getting the number of particles started per second, then you cannot normalize to that basis. You can only report the results in terms of per-particle-started. You can still give a spectrum, but only normalized on the basis of per-particle-started. You can still do some...

SpaceX did 165 launches in 2025, including putting up 3000 Starlink satts. Including Starlink, SpaceX made a profit of about $8 billion last year. This is based on about 9 million subscribers to Starlink, and various launches for various other customers. The number of Starlink customers is...

You can probably get a library card at your local university for very little money, maybe free. A medium-to-big uni is likely to have the journals you want. University of Toronto, for example, charges $145 Cdn per year. You can get discounts for being a senior, for being a U of T grad, for...

My personal bias is not to use rpp or rcc. I prefer to use simple planes and cylinders. That's mostly because of what I have wanted to do with calculations later. For example, when I model a fuel bundle, I often want to use the end surface of the fuel pins for other purposes. It is then not...

Normalization of detectors is a thing. What you need is some way of knowing the number of particles per second in your real system. You mention a DT neutron source and you are using 14.1 MeV neutrons. So I am expecting you have an accelerator firing D's into a T target. You would need some way...

Alex A mentions there being no cell 1504. In the OP there is no surface 1504 either, it's a line number as printed out by MCNP. flashcflash mentions the user manual advising not to use the complement operator too much. This is correct. But the complement operator is the # sign. It indicates...

As Alex A said, your NPS is rather large. It will take a long time to run. As a usual method, you want to start with a small number of particles and see what your tally uncertainties come out as. If they get too few particles you can increase NPS. I would suggest starting with something like 1...