Atacama Pathfinder EXperiment APEX
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APEX instrumentation

Facility instruments

Instrument Type Mode Frequency [GHz] HPBW [arcsec] IF range [GHz] # of beams Location Status Comment
LABOCA Bolometer array Facility 345 19   295 Cassegrain ok  
SEPIA Heterodyne SIS PI (ESO/Swedish) 159-211 (SEPIA180) 30-39 4 - 8 1 Nasmyth-A ok 2SB Commissioning March 2015
Facility 272-376 (SEPIA345) 17-23 4 - 12 1 Nasmyth-A ok 2SB Installation and commissioning in Q1 2020
Facility 578-738 (SEPIA660) 10-9 4 - 12 1 Nasmyth-A ok 2SB version commissioned in Nov-2018
nFLASH Heterodyne SIS Facility 200-270 (Band 6) 31-23 4 - 12 1 Nasmyth-A ok 2SB Installation and commissioning in Q1 2020.
Facility 385-500 (Band 8) 14-12 4 - 8 1 Nasmyth-A ok 2SB Installation and commissioning in Q1 2020
 
APEX-1 (SHeFI) Heterodyne SIS SSB 213 - 275 30 - 25 4 - 8 1 Nasmyth-A not ok Decommissioned from Oct 2017
APEX-2 (SHeFI) Heterodyne SIS SSB 267 - 378 23 - 17 4 - 8 1 Nasmyth-A not ok Decommissioned from Oct 2017
APEX-3 (SHeFI) Heterodyne SIS DSB 385 - 506 17 - 13 4 - 8 1 Nasmyth-A not ok Decommissioned from Oct 2017
APEX-T2 (SHeFI) Heterodyne HEB DSB 1250 - 1390 5 2 - 4 1 Nasmyth-A not ok Decommissioned from 2016
APEX-2A Heterodyne SIS DSB 279 - 381 18 4 - 8 1 Nasmyth-A not ok Decommissioned in Feb 2008 and replaced by APEX-2
SABOCA Bolometer array   850 8   39 Cassegrain not ok Decommissioned from 2015

PI instruments

Apart from the facility receivers, PI instruments will be installed at APEX during longer or shorter time periods. Some of them can be used by the community in collaboration with people from the corresponding PI group. In case of the MPIfR instruments, contact Rolf Güsten (rguesten(at)mpifr-bonn.mpg.de) before submitting any proposals.

Instrument Type Usage Frequency [GHz] HPBW [arcsec] # of beams Location Status Comment
FLASH+ Heterodyne SIS PI (MPIfR) 268-374 17-22 1 Nasmyth-A n/a Decommissioned in Dec 2019
374-516 12-14 1 n/a Decommissioned in Dec 2019
CHAMP+ Heterodyne SIS PI (MPIfR) 620-720 9-7 7 Nasmyth-B ok  
780-950 7-6 7 ok  
ASZCA Bolometer array PI (MPIfR) 150 42 330 Cassegrain n/a Decommissioned in December 2010
ARTEMIS+ Bolometer array PI (ESO) 1499 (200 μm) 4 288 * 8 Cassegrain n/a not available yet
856 (350 μm) 7 n/a Commissioning June 2013
666 (450 μm ) 9 n/a
PolKa Polarimeter PI (MPIfR) 345 19 295 Cassegrain ok Commissioning pending
SEPIA Heterodyne SIS PI (ESO/Swedish) 159-211 (Band 5) 30-39 1 Nasmyth-A ok 2SB Commissioning March 2015
Facility 272-376 (Band 7) 17-23 1 Nasmyth-A ok 2SB installation in Q4 2019
Facility 578-738 (Band 9) 10-9 1 Nasmyth-A ok 2SB installed August 2018
PI230 Heterodyne SIS PI (MPIfR) 200-270 31-23 1 Nasmyth-B ok Offered by MPIfR to all partners till new 230GHz facility will be in operation.

Facility backends

Calibration plan