Search Results

DocDB Home ]  [ Search ] [ Recent Changes ]

JGW-Number
Title
Author(s)
Topic(s)
Last Updated
T2112858-v4 Final design and implementation of the KAGRA green lock system Kiwamu Izumi Length Sensing and Control
Interferometer
Interferometer Sensing and Control
KAGRA
04 Oct 2021
T2113073-v5 TMS polarization monitor plan Yuta Michimura et al. Interferometer
Auxiliary IFO
Interferometer Sensing and Control
KAGRA
13 Jul 2021
E2113026-v1 Test report for the phase frequency discriminator unit Kiwamu Izumi et al. Interferometer Sensing and Control
KAGRA
Length Sensing and Control
Alignment Sensing and control
23 Jun 2021
T2112592-v6 Summary of Current Situation of In-vacuum Steering Mirrors Yuta Michimura KAGRA
Interferometer Sensing and Control
Interferometer
Optics
15 Jun 2021
G2112896-v3 Introduction to MIF (Main Interferometer) and IOO (Input and Output Optics) Groups etc. Yuta Michimura et al. KAGRA
Interferometer
14 May 2021
D1808394-v14 ISC system circuit diagram (old title: ALS system circuit diagram) Kiwamu Izumi et al. KAGRA
Interferometer Sensing and Control
03 May 2021
T2112594-v5 Sumary of Alignment Scheme of KAGRA in O3GK (~2020) Yuta Michimura et al. KAGRA
Interferometer
Alignment Sensing and control
15 Apr 2021
G2112472-v3 MIF Report for the bKAGRA Phase 2,3 Evaluation Meeting 2021 Yuta Michimura KAGRA
Chief meeting
Interferometer
25 Jan 2021
T2012132-v2 New GUI tool for interferometer modeling using Finesse simulation. Chiaki Hirose et al. Interferometer Sensing and Control
KAGRA
25 Jan 2021
G2012212-v3 Status of KAGRA: Expectations for O4 Sensitivity Yuta Michimura KAGRA
Interferometer
09 Nov 2020
T2011662-v13 Summary of Sensitivity Estimate for O4 in Various Interferometer Configurations Yuta Michimura et al. Interferometer
Cryogenic
KAGRA
05 Aug 2020
T2011661-v3 Actuator modification for cryopayload Yuta Michimura Suspensions
Cryogenic
Interferometer Sensing and Control
KAGRA
27 May 2020
G1910369-v7 Polarization issue in PRC Matteo Leonardi et al. KAGRA
Interferometer
Optics
18 Apr 2020
G2011541-v5 Discussion on Interferometer Configuration for O4 Yuta Michimura KAGRA
Interferometer
09 Mar 2020
G1910807-v3 Report on Simulation Studies on Interferometer Configuration for O3 Yoichi Aso et al. Chief meeting
KAGRA
Interferometer Sensing and Control
18 Sep 2019
T1910359-v2 ASC simulations for O3 SRM transmission, SRC Gouy phase shift and ITM transmission asymmetry Yuta Michimura Alignment Sensing and control
KAGRA
28 Aug 2019
T1910582-v1 Mode matching without PRM Kiwamu Izumi Interferometer
Optics
Interferometer Sensing and Control
KAGRA
25 Aug 2019
T1605967-v7 Cartoon of the optical layout around SRs Yuta Michimura Alignment Sensing and control
Interferometer Sensing and Control
KAGRA
20 Jul 2019
D1909844-v3 Rack design schematic for OMC1 Yutaro Enomoto et al. Length Sensing and Control
Interferometer
System Engineering
Alignment Sensing and control
Digital Control
Circuits
Interferometer Sensing and Control
Calibration
KAGRA
Data Acquisition
10 Jul 2019
D1808696-v6 Rack design schematic for ALSs 0 and 1 Kiwamu Izumi KAGRA
Interferometer Sensing and Control
10 Jul 2019
T1910396-v1 Proposal to put polarizers inside PRC and SRC Yutaro Enomoto et al. Interferometer Sensing and Control
KAGRA
Interferometer
03 Jul 2019
T1910352-v6 On the effect of arm cavity finesse asymmetry to O3 sensitivity Yutaro Enomoto et al. KAGRA
Interferometer Sensing and Control
25 Jun 2019
T1809078-v10 *APPROVED* KAGRA Sensitivity for Observation Scenario Paper 2018 Sadakazu Haino et al. KAGRA
30 May 2019
T1910129-v4 Conceptual Design of Optical Table Cover Yuta Michimura KAGRA
Interferometer
23 May 2019
T1910142-v2 Noise and range calculations for using High Power Coil Driver for the test mass stage of cryopayload Yuta Michimura Suspensions
KAGRA
Interferometer Sensing and Control
24 Apr 2019
G1910069-v2 How to be a superhero in interferometric gravitational wave detection Yuta Michimura KAGRA F2F
KAGRA
Interferometer
18 Apr 2019
T1909937-v2 How to deal with thick OSTM with wrong coating Yuta Michimura Optics
Interferometer
KAGRA
Interferometer Sensing and Control
01 Apr 2019
T1909618-v7 Cartoon of AS Port Yuta Michimura et al. Interferometer Sensing and Control
KAGRA
23 Feb 2019
G1909593-v2 Commissioning Status of KAGRA (talk for KIW5) Kiwamu Izumi Length Sensing and Control
Alignment Sensing and control
Digital Control
Suspensions
Workshop
Interferometer Sensing and Control
KAGRA
14 Feb 2019
T1707586-v12 List of RF Cables to Purchase for bKAGRA Yutaro Enomoto et al. Circuits
Interferometer Sensing and Control
KAGRA
31 Jan 2019
T1909573-v2 Definitions for the DRMI commissioning Yutaro Enomoto et al. KAGRA
Interferometer Sensing and Control
23 Jan 2019
T1809260-v1 Request for circuit: EOM RF Amplifier Yuta Michimura Modulation
Circuits
Interferometer Sensing and Control
KAGRA
13 Nov 2018
T1809210-v2 Request for circuit: Common Mode Servo Board Yutaro Enomoto et al. KAGRA
Circuits
MC
Interferometer
Modulation
29 Oct 2018
D1504460-v5 Handmade RF Distribution Amplifier Top Assembly Yuta Michimura Circuits
Modulation
KAGRA
Interferometer Sensing and Control
27 Oct 2018
T1605626-v3 ALS Sideband Frequency Yuta Michimura KAGRA
Interferometer Sensing and Control
15 Oct 2018
T1809183-v1 Moving POS Optical Table POS光学定盤の移動 Yuta Michimura KAGRA
Infrastructure
15 Oct 2018
T1808750-v1 [confidential] Data sheets for the green fibers for the ALS Kiwamu Izumi KAGRA
Interferometer Sensing and Control
21 Aug 2018
E1808724-v1 A list of MIF electronics Kiwamu Izumi KAGRA
Interferometer Sensing and Control
20 Aug 2018
G1808706-v1 Estimation of the cable length from PSL to ALS rack Kiwamu Izumi KAGRA
Interferometer Sensing and Control
15 Aug 2018
T1808460-v2 Estimation of clipping losses in a Fabry-Perot cavity Kiwamu Izumi Interferometer Sensing and Control
KAGRA
07 Aug 2018
G1808463-v1 Chief meeting material: ALS schedule Kiwamu Izumi Interferometer Sensing and Control
KAGRA
Scheduling
KAGRA meeting
06 Jul 2018
G1808352-v2 Proposal for modification of the satellite box Kiwamu Izumi KAGRA
Seismic Isolation
Interferometer Sensing and Control
Cryogenic
15 Jun 2018
T1808343-v2 Definitions for the X arm commissioning Yutaro Enomoto et al. KAGRA
Interferometer Sensing and Control
10 Jun 2018
D1808336-v1 (Tried to make a) bKAGRA ISC Cabling Diagram Yuta Michimura KAGRA
Interferometer Sensing and Control
Circuits
Interferometer
31 May 2018
D1503189-v7 bKAGRA PSL EOM Layout Yuta Michimura KAGRA
Interferometer Sensing and Control
Modulation
30 May 2018
G1808254-v3 Commissioning of bKAGRA phase-I : Details Kiwamu Izumi KAGRA
Interferometer Sensing and Control
KAGRA F2F
23 May 2018
G1808281-v1 Updates from MIF Subgroup (F2F May 20, 2018) Yoichi Aso et al. KAGRA F2F
KAGRA
Interferometer Sensing and Control
Interferometer
18 May 2018
T1808172-v9 O3 Estimated Sensivitiy for FPMI, PRFPMI and RSE Yutaro Enomoto et al. Interferometer Sensing and Control
KAGRA
02 May 2018
D1808129-v4 bKAGRA phase 1 LSC cabling Yutaro Enomoto et al. Length Sensing and Control
KAGRA
Interferometer Sensing and Control
01 May 2018
P1707051-v2 Mirror actuation design for the interferometer control of the KAGRA gravitational wave telescope Yuta Michimura Seismic Isolation
KAGRA
Length Sensing and Control
Suspensions
12 Apr 2018
T1808126-v7 PRFPMI or RSE for Joining O3 Yuta Michimura Length Sensing and Control
Interferometer
KAGRA
10 Apr 2018
T1808117-v1 Alignment Plan for TRY Optical Table in bKAGRA Phase 1 Yuta Michimura KAGRA
Interferometer Sensing and Control
Auxiliary IFO
26 Mar 2018
T1808093-v1 Measuring the Schnupp asymmetry in a simple Michelson interferometer Kiwamu Izumi et al. KAGRA
Interferometer Sensing and Control
Interferometer
Length Sensing and Control
20 Mar 2018
L1808047-v1 Proposal for updating PSL layout Yuta Michimura KAGRA
Interferometer Sensing and Control
Modulation
15 Mar 2018
T1807775-v5 Interferometer Layout for Both IR and Green Beams, With and Without ITMs Yuta Michimura KAGRA
Auxiliary IFO
Interferometer
07 Mar 2018
E1807703-v1 Proposal for updating the test mass realtime control library Kiwamu Izumi Interferometer
Digital Control
Suspensions
Seismic Isolation
KAGRA
24 Jan 2018
G1807659-v2 Summary of the beam position measurement Kiwamu Izumi Vacuum
KAGRA
Interferometer
Optics
16 Jan 2018
G1807653-v1 Proposal for changing the BS real time model for hierarchical optical lever control Kiwamu Izumi Interferometer
Alignment Sensing and control
KAGRA
15 Jan 2018
T1807652-v1 Notes on the beam layout without the ITMs Kiwamu Izumi KAGRA
Interferometer
13 Jan 2018
G1707573-v2 Material for beam centering brainstorm v2 Kiwamu Izumi Alignment Sensing and control
KAGRA
27 Dec 2017
G1707572-v0 Material for beam centering brainstorm Kiwamu Izumi KAGRA
Alignment Sensing and control
27 Dec 2017
T1707334-v5 Main Interferometer Configuration for Early Phase of bKAGRA Yutaro Enomoto et al. KAGRA
Interferometer
06 Dec 2017
T1707429-v2 Summary of the initial alignment closeout meeting Kiwamu Izumi Interferometer
KAGRA
16 Nov 2017
G1707417-v1 Meeting material: initial alignment closeout meeting, setting the stage Kiwamu Izumi Interferometer
KAGRA
14 Nov 2017
E1707416-v1 ALS meeting material (2017.Nov.13) Kohei Doi et al. Length Sensing and Control
KAGRA
14 Nov 2017
D1402984-v13 iKAGRA ISC Cabling Diagram Yuta Michimura KAGRA
Interferometer Sensing and Control
Modulation
MC
13 Oct 2017
G1706968-v4 重力波望遠鏡KAGRAの主干渉計高度化 Yuta Michimura Interferometer
Data Analysis
Interferometer Sensing and Control
JPS
13 Sep 2017
D1402986-v20 KAGRA ISC Electrical Components Layout Yuta Michimura KAGRA
Interferometer Sensing and Control
MC
Modulation
11 Sep 2017
T1707079-v4 MIF Schedule Estimate for bKAGRA Phase 2 Yuta Michimura KAGRA
Interferometer Sensing and Control
06 Sep 2017
T1605692-v9 Commissioning Procedure for bKAGRA Phase 1 Yuta Michimura KAGRA
Vacuum
Cryogenic
Interferometer
12 Jun 2017
T1503453-v16 Actuator Noise Modeling Report Yuta Michimura Length Sensing and Control
Suspensions
KAGRA
Seismic Isolation
12 Jun 2017
G1706729-v1 MIFなどの紹介 (KAGRA合同サブグループ説明会) Yuta Michimura Interferometer Sensing and Control
KAGRA
17 May 2017
G1706333-v12 重力波望遠鏡KAGRAの低温動作に向けた主干渉計開発 Yuta Michimura KAGRA meeting
Length Sensing and Control
KAGRA
JPS
31 Mar 2017
G1706378-v5 KAGRA MIF Status Report (F2F Mar 29, 2017) Yuta Michimura KAGRA F2F
Interferometer Sensing and Control
KAGRA
31 Mar 2017
T1605986-v2 Request for circuit: Optical Lever QPD Amplifier Yuta Michimura KAGRA
Circuits
26 Dec 2016
T1605839-v2 Request for circuit: Universal Whitening Filter with DC Power Yuta Michimura Circuits
KAGRA
26 Dec 2016
S1605990-v0 Agilent N5181B MXG X-Series RF Analog Signal Generator Yuta Michimura KAGRA
Circuits
Modulation
26 Dec 2016
T1605353-v12 Arm Length Stabilizaton Conceptual Design Yuta Michimura Length Sensing and Control
KAGRA
Interferometer Sensing and Control
16 Dec 2016
G1605906-v4 KAGRA MIF Status Report (F2F Dec 7, 2016) Yuta Michimura KAGRA F2F
KAGRA
07 Dec 2016
D1504268-v4 RF Patch Panel for KAGRA Yuta Michimura Interferometer Sensing and Control
KAGRA
14 Nov 2016
T1605595-v12 Interferometer design for bKAGRA Phase 1 and Beyond Yuta Michimura KAGRA
Interferometer Sensing and Control
26 Sep 2016
T1605274-v5 MIF Commissioning Schedule Estimate for bKAGRA Phase 1 Yuta Michimura Interferometer Sensing and Control
KAGRA
Interferometer
KAGRA meeting
13 Sep 2016
T1605492-v2 Request for circuit: Frequency Doubler Yuta Michimura Circuits
KAGRA
08 Sep 2016
G1605563-v4 KAGRA MIF Status Report (F2F Aug 26, 2016) Yuta Michimura KAGRA
KAGRA F2F
Interferometer
26 Aug 2016
T1605491-v1 Request for circuit: Common Mode Servo Board Yuta Michimura Circuits
KAGRA
09 Aug 2016
T1605490-v1 Request for circuit: RF Distribution Amplifier Yuta Michimura Circuits
KAGRA
09 Aug 2016
T1605488-v1 Request for circuit: Quad IQ Demodulator ASC Yuta Michimura Circuits
KAGRA
09 Aug 2016
T1605487-v1 Request for circuit: Quad IQ Demodulator LSC Yuta Michimura KAGRA
Circuits
09 Aug 2016
T1503547-v5 bKAGRA PSL Design Study Yuta Michimura KAGRA
Interferometer Sensing and Control
Laser
Modulation
22 Jul 2016
G1605201-v5 iKAGRAの教訓 MIFコミッショニング現場の視点から Yuta Michimura KAGRA
Safety
Scheduling
Suspensions
Interferometer
Chief meeting
System Engineering
14 Jun 2016
T1605261-v1 Cartoon of the optical layout around PRs Yuta Michimura KAGRA
Interferometer Sensing and Control
Alignment Sensing and control
03 Jun 2016
T1605177-v3 Summary of iKAGRA Test Run April 2016 Yuta Michimura KAGRA
Interferometer Sensing and Control
Chief meeting
Interferometer
MC
13 May 2016
G1605155-v2 iKAGRA反省会 Yuta Michimura Suspensions
Scheduling
Management
Seminar
Interferometer
KAGRA
Safety
11 May 2016
T1605101-v12 Summary of iKAGRA Test Run March 2016 Yuta Michimura Chief meeting
MC
Suspensions
Laser
Vacuum
Interferometer Sensing and Control
KAGRA
22 Apr 2016
T1605109-v1 iKAGRA online calibration for April test run 2016 Yuta Michimura KAGRA
Interferometer Sensing and Control
09 Apr 2016
G1605000-v5 重力波望遠鏡KAGRAにおける主干渉計制御 Yuta Michimura KAGRA
Interferometer Sensing and Control
JPS
22 Mar 2016
T1604823-v10 Initial Alignment Procedure for iKAGRA Yuta Michimura Interferometer
Vacuum
KAGRA
01 Mar 2016
G1604841-v1 MIF status for F2F 2016/2/22 Yoichi Aso KAGRA
22 Feb 2016
T1503190-v8 RF and AF Cabling Policy for KAGRA ISC Yuta Michimura Interferometer Sensing and Control
KAGRA
Circuits
12 Jan 2016
D1504461-v7 RF Distribution Amplifier Front Panel Kentaro Komori Modulation
Circuits
Interferometer Sensing and Control
KAGRA
05 Nov 2015
G1504275-v3 重力波望遠鏡KAGRAの主干渉計制御設計II Yuta Michimura Circuits
KAGRA
Interferometer Sensing and Control
JPS
27 Sep 2015
G1504215-v2 iKAGRA ISC Analog Electronics Readiness Status Yuta Michimura Interferometer Sensing and Control
KAGRA
Circuits
KAGRA meeting
07 Sep 2015
G1504030-v3 KAGRA MIF Status Report (F2F Aug 27, 2015) Yuta Michimura KAGRA F2F
Interferometer Sensing and Control
KAGRA
27 Aug 2015
T1503330-v1 KAGRA Frequency Stabilization Servo Modeling Report (preliminary) Yuta Michimura Interferometer Sensing and Control
KAGRA
Laser
MC
Length Sensing and Control
03 Jun 2015
G1503582-v3 KAGRA MIF Status Report (May 26, 2015) Yuta Michimura KAGRA
Interferometer Sensing and Control
KAGRA meeting
Suspensions
26 May 2015
G1503555-v1 KAGRA Lock Acquisition in One Slide Yuta Michimura KAGRA
Interferometer Sensing and Control
GWADW
20 May 2015
T1503387-v4 Production request for RF QPD Interface Yoichi Aso et al. Interferometer Sensing and Control
KAGRA
Circuits
30 Mar 2015
T1503388-v1 Production request for RF PD Interface Yoichi Aso et al. KAGRA
Interferometer Sensing and Control
Circuits
30 Mar 2015
G1503433-v2 重力波望遠鏡KAGRAの主干渉計制御設計 Yuta Michimura JPS
KAGRA
Interferometer Sensing and Control
22 Mar 2015
T1503386-v2 Production request for DC QPD Yoichi Aso et al. Interferometer Sensing and Control
KAGRA
Circuits
09 Mar 2015
T1503327-v7 Positive-g bKAGRA Arm Cavity: ASC Point of View Yuta Michimura Alignment Sensing and control
Interferometer Sensing and Control
KAGRA
25 Feb 2015
G1503331-v7 Optomechanical Instability in the KAGRA Gravitational Wave Telescope Yuta Michimura KAGRA
Alignment Sensing and control
Workshop
20 Feb 2015
G1503267-v3 New iKAGRA Configuration Yuta Michimura Interferometer Sensing and Control
KAGRA
KAGRA F2F
06 Feb 2015
G1503280-v1 MIF Report @ F2F 2015 Feb Yoichi Aso KAGRA
05 Feb 2015
T1503255-v5 Modification Plan for Common Mode Servo Board Yuta Michimura KAGRA
Interferometer Sensing and Control
MC
Modulation
23 Jan 2015
D1403111-v2 Differential or Single-Ended, Which Should We Use for FSS Yuta Michimura Circuits
Interferometer Sensing and Control
KAGRA
16 Dec 2014
D1403033-v5 Extra Cable Racks We Need for IOO+MIF+VIS+AOS Yuta Michimura KAGRA
Circuits
Infrastructure
04 Dec 2014
D1402379-v1 MIF optical layout for bKAGRA Yoichi Aso KAGRA
08 May 2014
D1402380-v1 MIF layout for iKAGRA Yoichi Aso KAGRA
08 May 2014
G1402365-v1 What can we do with iKAGRA Yoichi Aso KAGRA
28 Apr 2014
G1402302-v2 Frequency Stabilization Servo Modeling for bKAGRA Yoichi Aso KAGRA
03 Apr 2014
T1200913-v6 KAGRA Main Interferometer Design Document Yoichi Aso et al. Length Sensing and Control
Interferometer
Alignment Sensing and control
Interferometer Sensing and Control
Others
KAGRA
19 Feb 2014
G1402206-v1 MIF Installation and Commissioning plans for F2F 2014 Feb Yoichi Aso KAGRA
14 Feb 2014
G1301746-v2 Beam Shutter Shinichiro Ueda KAGRA
21 Jul 2013
G1301627-v2 MIF Report 2013/4/17 Yoichi Aso KAGRA
17 Apr 2013
G1201450-v1 MIF 2012/12/17 Yoichi Aso KAGRA
17 Dec 2012
G1201272-v1 KAGRA Beam Jitter Requirement Yoichi Aso KAGRA
15 Sep 2012
G1201217-v1 Current status of MIF 2012/8/1 Yoichi Aso KAGRA
02 Aug 2012
G1201119-v2 MIF Meeting 2012/7/3 Yoichi Aso Others
KAGRA
Interferometer
02 Jul 2012
G1201075-v1 MIF Report Collaboration Meeting 2012/5/29 Yoichi Aso KAGRA
Interferometer
KAGRA meeting
29 May 2012
G1201055-v1 Introduction to the KAGRA Interferometer Yoichi Aso Others
KAGRA
Interferometer
28 May 2012
G1201009-v1 Main Interferometer External Review 2012 Yoichi Aso Interferometer
Reviews
KAGRA
18 Apr 2012
G1200963-v1 MIF Status 2012/4/16 Yoichi Aso Interferometer
KAGRA
Domestic
16 Apr 2012
T1200921-v2 External Review Document of KAGRA Main Interferometer Yoichi Aso KAGRA
Interferometer
Reviews
09 Apr 2012
G1200926-v1 KAGRAの主干渉計設計II Yoichi Aso Interferometer
KAGRA
JPS
23 Mar 2012
G1200907-v1 超高感度重力波検出器へ向けた光学設計技術 Yoichi Aso KAGRA
Interferometer
Conference
15 Mar 2012
G1200854-v1 Status of MIF 2012/2/3 Yoichi Aso Length Sensing and Control
KAGRA
Interferometer Sensing and Control
KAGRA F2F
03 Feb 2012
G1200809-v1 MIF Internal Review 2012/1/27 Yoichi Aso Reviews
Interferometer
KAGRA
Interferometer Sensing and Control
26 Jan 2012
G1200763-v1 Input Mode Matching of LCGT Yoichi Aso Interferometer
KAGRA
Others
05 Jan 2012
G1100740-v1 MIF Status 2011 -12-12 Yoichi Aso KAGRA meeting
Interferometer
KAGRA
Interferometer Sensing and Control
12 Dec 2011
G1100677-v1 Status of Main Interferometer Subsystem 2011 Nov. Yoichi Aso Interferometer Sensing and Control
KAGRA
KAGRA meeting
Interferometer
08 Nov 2011
G1100554-v1 Summary of the Current Issues with LCGT Main Interferometer Design Yoichi Aso KAGRA
KAGRA F2F
Interferometer
05 Aug 2011
G1100459-v1 Current Status of the MIF working group 2011/6/13 Yoichi Aso Interferometer Sensing and Control
KAGRA
KAGRA meeting
Length Sensing and Control
Alignment Sensing and control
13 Jun 2011
G1100379-v3 Main Interferometer Subsystem Type B Review Yoichi Aso Reviews
Interferometer
Length Sensing and Control
Alignment Sensing and control
Interferometer Sensing and Control
KAGRA
28 Feb 2011
T1100363-v1 LCGT Main Interferometer Design Yoichi Aso Reviews
Optics
Length Sensing and Control
Interferometer
Alignment Sensing and control
Interferometer Sensing and Control
KAGRA
21 Feb 2011
G1100343-v2 MIF Meeting Feb 9 2011 Yoichi Aso Alignment Sensing and control
Interferometer
Length Sensing and Control
Optics
Collaboration meeting
KAGRA
Interferometer Sensing and Control
10 Feb 2011
G1100322-v1 Current Status of Main Interferometer Design Yoichi Aso Alignment Sensing and control
Interferometer
Length Sensing and Control
KAGRA F2F
KAGRA
Interferometer Sensing and Control
04 Feb 2011
Number of documents found: 147

DocDB Home ]  [ Search ] [ Recent Changes ]

DocDB Version 8.7.10, contact Document Database Administrators
Execution time: 1 wallclock secs ( 0.82 usr + 0.09 sys = 0.91 CPU)