Talk:Kamioka Liquid Scintillator Antineutrino Detector

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Guild of Copy Editors

This article was copy edited by LukasMatt, a member of the Guild of Copy Editors, on 17 May 2014‎.Guild of Copy EditorsWikipedia:WikiProject Guild of Copy EditorsTemplate:WikiProject Guild of Copy EditorsGuild of Copy Editors articles

the long baseline

What is "the long baseline"? The article mentions something about a larger volume to compensate for the loss in neutrino flux due to the long baseline. Also, it would be really cool if some knowledgeable person could write up a comparison in capabilities between KamLAND and the old Kamiokande. 72.177.116.87 03:29, 6 September 2007 (UTC)[reply]

Guild of Copy Editors cleanup

I am handling the copy edit for this article. As I read through the article, I will make minor changes to it directly. I will list lots of other suggestions here on the "Talk" page. Feel free to comment on any suggestion or to ignore any suggestion.

You can also (slowly and carefully) make changes to the article based upon a suggestion while I am still copy editing (approximately 3-4 days to complete).

Lead section

"The site is surrounded by 53 Japanese commercial nuclear reactors."

To the casual reader, this sentence seems like an exaggeration; it puts an improbable image into the mind's eye of the reader.

"large mixing angle (LMA) solutions"

This concept should be explained somewhere. When I look at the "Solar neutrino problem" article, it does not contain this concept.

--LukasMatt (talk) 00:10, 16 May 2014 (UTC)[reply]

KamLAND Detector

"3.2 kiloton*"

Why does an asterisk (*) follow the unit?

"Cherenkov detector"

As I read, I'm constantly consulting "KamLAND schematic.png". The text says "Cherenkov detector"; the schematic says "Outer Detector". I wish that schematic said "Cherenkov detector".

"water Cherenkov detector"

The article uses the qualifier "water". Therefore, the reader becomes curious. Is there something special about a water Cherenkov detector? Are there other types of Cherenkov detectors? However, when the reader follows the link to the "Cherenkov detector" article, it doesn't contain the word water.

"distinguishing antineutrinos from backgrounds"

The word backgrounds is linked to a Wiki disambiguation page. It should be linked to a specific Wiki article.

"the long baseline"

I agree with the person on the Talk page who asked, "What is 'the long baseline'?". I imagine it refers to the "approximately 180 kilometers from the reactors", but it should be stated explicitly.

"The KamLAND detector uses a 1,000-metric-ton detection mass, which is two orders of magnitude larger than the previous largest experimental device."

This sentence seems to have two serious problems:

KamiokaNDE, a previous experimental device, "contained 3,000 tons of pure water";
"two orders of magnitude" means 100 times larger

"KamLAND has a much larger detection volume"
"a 1,000-metric-ton detection mass"
"the increased volume of the detector"

The paragraph jumps from volume to mass to volume. Given this problem and the two serious problems noted above, the paragraph needs to be rewritten.

--LukasMatt (talk) 01:39, 17 May 2014 (UTC)[reply]

Results

Prior to the "Results" section, the article slowly and clearly explained its concepts.

The "Results" section is a different story. It flies through material with the basic premise that readers already understand everything about the subject. That's an inaccurate assumption.

More proof that the "Results" section doesn't try hard enough to communicate with readers–the "Studying neutrino oscillation" subsection contains only one wikilink.

Studying neutrino oscillation

"86.8±5.6 events"

What is an "event"?

"after all event cuts"

What are "event cuts"?

"These results establish antineutrino disappearance"

Readers are confused. The article states, "[KamLAND's] purpose is to detect electron antineutrinos". The article further describes "dimming, or 'disappearance,' of the electron antineutrinos" as a negative condition.

Why, then, does the "Results" section first discuss antineutrino disappearance?

"The shape of this spectrum"

Which "spectrum"?

"no-oscillation hypothesis"

This hypothesis must be described somewhere.

"neutrino-disappearance mechanism"

This concept must be described somewhere.

"the neutrino decay and de-coherence models"

These models must be described somewhere.

"and a fit provides"
"a combined fit"

What is a "fit"?

"the Δm2 and θ parameters"

These parameters must be described somewhere.

"KamLAND measures Δm2 most precisely"

With respect to what?

"the solar experiments exceed KamLAND's ability to measure θ"

What solar experiments?

"the best solar neutrino oscillation parameter determination to date"

If nobody updates this article, readers will always assume the current date. Be more specific about "date".

Geologically produced antineutrinos

Give readers a well-described summary of the results.

--LukasMatt (talk) 16:24, 17 May 2014 (UTC)[reply]

External links modified (January 2018)

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