LAGO project, status

Ibrahim Torres INAOE, México

Astroparticle Physics Yachay, 2016

Overview

• LAGO project

• The LAGO detectors and sites

• Conclusions

The Latin American Giant Observatory (LAGO) ProjectA very long baseline “array” of water Cherenkov detectors (WCD)

• 87 members from 26 institutions, 10 countries

• Scientifics goals:

• Study High Gamma events at high altitude sites

• Transient and long term Space Weather phenomena trough Solar modulation of CR

• Measurement of background radiation at ground levels at different rigidity, continental level

• Academic goals:

• Train Latin American students in Astroparticle physics

• Build a Latin-America network of Astroparticle researches

LAGO Sites• Network goes from

México to Patagonia (Bariloche)

• One station will be installed at Marambio Base (200 m.a.s.l), Antarctic

• Sites similar longitudes but different latitudes and altitudes (different rigidity cutoff)

• All based on WCD

• Placed at remote places and no infrastructure, every node would be autonomous

• Every node have other sensors and comercial GPS

• To increase electromagnetic-muon separation at single pulse level in high altitude sites, a method based on the total charge and pulse rise time analysis is also implemented

• Improving the search for possible GRB candidates

• PMT + Digitizer board (own design)

• FPGA + raspberry:

• control

• DAQ

• remote access

• Signal digitizers: 10 bits @ 40 MSps FADC (Arg), 14 bits @ 100 MSps FADC (Mex)

• Consumption <= 9 W

Site Status

Ecuador• 3 Universities

• Quito:

• Escuela Politécnica Nacional

• Universidad de San Francisco de Quito

• Escuela Superior Politécnica de Chimborazo

InvestigadoresPrincipalesNicolásVásquezPhDEPN

AliciaCarabalíEPNMarioAudeloMsCESPOCHEdgarCarreraPhDUSFQ

AsistentesdeInvestigación

StephanyVargasEPN

JuanPabloSemananteEPN

AndreaCorreaEPN

AndrésDelgadoEPN

PabloRivadeneiraEPN

KleverVicenteEPN

MarcusBecerraESPOCH

RaquelQuishpeUSFQ

MarcoRamosUSFQ

JoanMendozaUSFQ

TANCA

Lab

StateUniversityofCampinas

Campinas,SP,Brazil22º54’S,47º03N640metersa.s.l.

TANCAisanicknamefortheTAnkdetectorofCAmpinas

TheTANCAatUnicamp

CAMAC/NIMmodules• LeCroyScaler2551(100MHz)• LogicUnitCAEN• DiscriminatorCAEN• DualGateGeneratorLeCroy• DACCAEN

5and60minaverages

ForbusheventJune2015

• Guatemala:

• 2 full detectors using Nexys 2 electronics

• Peru: two WCD at Lima

• Colombia: Pasto and Bucaramanga

• Bolivia:

• La paz:One prototype, testing, comparing with MC, problems with Nexys

• Chacaltaya: re-deploy detectors

• Argentina:

• Buenos Aires one 750 lts, problems with electronics, deploying one 2000 lts

México

Conclusions• Several detectors are being deployed along LA

• Still dealing with non-homogenous DAQ board

• Moving to comercial board

• Full simulation chain: from primary to detectors signals in process

• Continuos data from all the sites is demanding