Qweak Inelastic FFTfile PMTLED - Revision history

Foretony at 01:29, 8 November 2011

2011-11-08T01:29:22Z

Foretony at 00:33, 8 November 2011

2011-11-08T00:33:28Z

Foretony at 00:33, 8 November 2011

2011-11-08T00:33:11Z

Foretony at 00:32, 8 November 2011

2011-11-08T00:32:33Z

Foretony: Created page with 'An attempt to use Richard Jone's FFT algorithm to filter out helicity events. Below is a histogram of an LED shining onto a PMT in Qweak. Notice the multiple peaks in the asymm…'

2011-11-08T00:21:39Z

Created page with 'An attempt to use Richard Jone's FFT algorithm to filter out helicity events. Below is a histogram of an LED shining onto a PMT in Qweak. Notice the multiple peaks in the asymm…'

New page

An attempt to use Richard Jone's FFT algorithm to filter out helicity events.

Below is a histogram of an LED shining onto a PMT in Qweak. Notice the multiple peaks in the asymmetry distribution.

[[File:11498_000_PMTLedAsymBefore.png | 200 px]]

Using Richard's FFT code

[[File:FFTseries.cc_RJ.txt]]

and the root commands

.L FFTseries.cc
TH1* fft=FFTseries(Mps_Tree,"qwk_pmtled","hw_sum");

[[File:11498_000_PMTLedAsymFFT.png | 200 px]]

← Older revision		Revision as of 01:29, 8 November 2011
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−	An attempt to use Richard ~~Jone~~'s FFT algorithm ~~to filter out~~ helicity ~~events~~.	+	An attempt to use Richard Jones' FFT algorithm on helicity.

	Below is a histogram of an LED shining onto a PMT in Qweak. Notice the multiple peaks in the asymmetry distribution.		Below is a histogram of an LED shining onto a PMT in Qweak. Notice the multiple peaks in the asymmetry distribution.

← Older revision		Revision as of 00:33, 8 November 2011
Line 16:		Line 16:


−	The following frequencies appear at 10,60,120,180, 240, 300	+	The following frequencies appear : 10,60,120,180, 240, 300

← Older revision		Revision as of 00:33, 8 November 2011
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−	Using Richard's FFT code	+	Using Richard's FFT code [[File:FFTseries.cc_RJ.txt]]
−
−	[[File:FFTseries.cc_RJ.txt]]

	and the root commands		and the root commands

← Older revision		Revision as of 00:32, 8 November 2011
Line 16:		Line 16:

	[[File:11498_000_PMTLedAsymFFT.png \| 200 px]]		[[File:11498_000_PMTLedAsymFFT.png \| 200 px]]
		+
		+
		+	The following frequencies appear at 10,60,120,180, 240, 300