IceCube Institutional Memorandum Of Uderstanding (MOU)

LBNL built the DOM main boards, and many of our service tasks are related to that; we are responsible for DOMsimulator and DOMcalibrator (Chang Hyon Ha), and work on flasher calibrations, where the original goal was to measure the electronics performance. This includes work on the calibration of saturated PMT pulses, to expand the usable dynamic range of the DOMs (G. Binder). Our other service activities include member of the Publication Committee (S. Klein), co-chairing the atmospheric/diffuse PWG (S. Klein), work on verification and monitoring,, Simulation Programs: cmc (Chang Hyon Ha) and work on reconstruction algorithms (G. Binder, S. Miarecki), and work on the track engine trigger (D. Nygren). L. Gerhardt, has developed and is maintaining reconstruction algorithms for two parallel tracks, as are found in air showers with high transverse momentum muons, and pairs of upgoing particles that are predicted in some models of supersymmetry. G. Binder has developed a new simple cascade reconstruction as an alternative ‘first guess’ method. S. Miarecki has developed, implemented and is maintaining a new method for measuring muon energy which has significantly better resolution than the previous approaches.

Our analysis efforts are focused in several areas. The first is a search for extraterrestrial neutrinos, especially cascades, where we have multiple efforts covering different energy ranges. The second is a search for atypical cosmic-ray showers; events with high transverse momentum muons in showers and photon-initiated showers with a very low muon content. Finally, Miarecki is working on a measurement of the neutrino-nucleon cross-section by measuring atmospheric neutrino absorption in the Earth; statistics permitting, this will be her PhD dissertation.

We use the National Energy Research Supercomputer Center (NERSC) PDSF (Parallel Distributed Systems Facility) to produce Monte Carlo event samples; this has mostly been cascade signal events. C. Ha maintains the PDSF software installation and coordinates this production. The hardware is maintained by NERSC.

Labor Cat.	Names	WBS L3	Tasks	Funds Source	WBS 2.1	WBS 2.2	WBS 2.3	WBS 2.4	WBS 2.5	Grand Total
					Program Management	Detector Maintenance & Operations	Computing & Data Management	Triggering & Filtering	Data Quality, Reconstruction & Simulation Tools
KE	KLEIN, SPENCER	Administration	Supervise LBNL effort	NSF M&O Core	0.05					0.05
		Administration	PubComm Member	Institutional In-Kind	0.10					0.10
		Physics Filters	co-chair of Diffuse WG	Institutional In-Kind				0.25		0.25
	KLEIN, SPENCER Total				0.15			0.25		0.40
	NYGREN, DAVID R	Detector Maintenance & Operations	Track Engine Trigger	Institutional In-Kind		0.10				0.10
	NYGREN,DAVID R Total					0.10				0.10
PO	CHANG, HYON HA	Detector Monitoring	Monitoring shifts	Base Grant		0.09				0.09
		Simulation Production	Simulation Production on PDSF	Base Grant			0.20			0.20
		Physics Filters	L2 processing for IC86, studying cascade energy resolution	Base Grant				0.25		0.25
		Simulation Programs	Simulation Programs: cmc	Base Grant					0.10	010
		Simulation Programs	DOM simulator & calibrator	Base Grant					0.10	0.10
	CHANG, HYON HA Total					0.09	0.20	0.25	0.20	0.74
EN	STEZELBERGER, THORSTEN	Data Acquisition	Maintain DAQ Hardware	NSF M&O Core		0.15				0.15
	STEZELBERGER, THORSTEN Total					0.15				0.15
GR	SANDRA, MIARECKI	Reconstruction/ Analysis tools	Algorithm for measuring muon energy	Base Grant					0.25	0.25
	SANDRA, MIARECKI Total								0.25	0.25
	BINDER, GARY	Reconstruction/ Analysis tools	PMT saturation corrections for analysis	Base Grant					0.50	0.50
	BINDER, GARY Total								0.50	0.50
LBNL Total					0.15	0.34	0.20	0.50	0.95	2.14