- Количество слайдов: 58
WP 1: Detector Assembly Liverpool • Tasks: ØDetector specification measurement • Assembly of components in progress ØDetector assembly for scanning • Work in progress ØTriple-cryostat assembly • Preparation in progress
Detector specification measurement • Dedicated testing system – Canberra equipment delivered • New single test cryostat – procure component parts • Updated firmware for 40 Gretina digitiser channels.
Detector assembly for scanning • The AGATA asymmetric detector C 001 has been reassembled and tested, prior to scanning (WP 2) in the laboratory.
Detector assembly for scanning H. Boston, C. Unsworth trained in Cologne Subsequently trained M. Norman and S. Moon Preamplifier test box shipped to Liverpool Delays in reassembly due to internal wiring troubleshooting and slow pumping system • Flaky internal wiring (test cryostat) – possible Kapton cabling • Cross talk data collected analysed with Gretina cards • Energy resolution verified with analogue electronics • •
Triple-cryostat assembly • New pumping system due for delivery • System will then be commissioned
WP 1 : Next 6 months • • • C 001 repaired and commissioned, being scanned Detector acceptance system will be commissioned Liverpool to be agreed as a detector acceptance site Procure cryostat component parts Appoint Liverpool technician Next detector for scanning to be commissioned.
WP 1: Milestones Table 1: Milestones achieved in the last six months Milestone Work No. Package Milestone Target Date Status M 1. 1 Train Staff in Cologne 02 Apr 09 Complete WP 1 Table 2: Milestones due in the next six months Milestone no. Work Milestone Package M 1. 2 WP 1 Successful measurements on a detector capsule and Liverpool to be an accredited detector acceptance centre Target Date 05 Oct 09
WP 2: Interaction position determination using pulse shape analysis Manchester, Liverpool, Surrey • Tasks: ØDetector Characterisation • C 001 detector scan ØMGS 3 D Simulation code comparison with expt. • Work in progress ØPulse Shape Analysis (PSA) development • Work has started
WP 2 report General Comments: • S. Moon and A. Robinson started as PDRAs • PSA team meetings • AGATA week in Cologne (30 March) • Legnaro (21 -22 May 09) • Bi-weekly telephone meetings
Detector Characterisation • Offset of the horizontal segmentation line in rings 2 and 3, due to the electron and hole drift profile being influenced by the fast/slow axis orientations. • The scan of detector C 001 revealed a 12° offset toward segment B from that specified by the AGATA collaboration. • Implication need to characterise to determine true axis orientation
Detector Characterisation • Singles scan C 001 • Output: 2 IEEE TNS papers, 1 NIM paper, 2 APS conference proceedings.
Detector Characterisation • Development of improved performance scanning methodology. • Full scan presently 2 months • The Pulse Shape Comparison (PSC) Scan method [F. C. L. Crespi, NIM A, April 08] • Chi-squared minimisation of pulses shapes recorded from two collimated beams injected at 90 degrees to each other in sequential measurements. • This process requires only a singles scan and therefore would in principle allow a detector to be characterised in a fraction of the time.
Detector Characterisation • Coincidence scan C 001 delayed due to cooling problem requiring FET replacements. • Detector now being scanned (WP 1)
MGS 3 D Simulation code comparison • Basis data set optimised for symmetric detectors.
MGS 3 D Simulation code comparison • Majority of difference can be accounted for by differential cross-talk correction.
MGS 3 D Simulation code comparison
MGS 3 D Simulation code comparison • Theoretical E-field calculations for three asymmetric AGATA detector shapes have been performed using MGS.
MGS 3 D Simulation code comparison • Reasonable good agreement (symmetric crystals) • Axis orientation issue • MGS grid issue (missing points) • First triple basis data set (asymmetric crystals) delivered to LNL for in-beam tests • Performance is promising
PSA development • • • Storage devices purchased for basis data sets. Relevant meetings attended Personnel up to speed Infrastructure for algorithm optimisation Basis data set distribution
WP 2 : Next 6 months • Detector Characterisation – – – Complete C 001 detector scan Validate PSC method Root conversion program available Compton reconstruction Mount next detector • MGS 3 D Simulation code comparison with expt. – Implement differential cross talk correction – Compare MGS/JASS performance • PSA development – Complete analysis platform commissioning – Optimise PSA codes
WP 2: Milestones Table 1: Milestones achieved in the last six months Milestone No. Work Package Milestone Target Date Status M 2. 1 WP 2 Theoretical asymmetric Triple Cluster Basis set (MGS) delivered to Legnaro and used 01 April 09 Complete M 2. 2 WP 2 PDRA commenced work in Manchester/Liverpool 01 May 09 Complete
Table 2: Milestones due in the next six months Milestone no. Work Package Milestone Target Date M 2. 3 WP 2 Detector 1 available for scanning 24 June 09 M 2. 4 WP 2 Detector 1: Basis data set available 22 Sept 09 M 2. 5 WP 2 Comparison of MGS electric field simulations with experimental pulse shapes complete and first interaction position algorithms ready 23 Dec 09 M 2. 10 WP 2 Preliminary analysis of AGATA Stage 0 data complete 2 Dec 09
WP 3 : Simulation and tracking York, UWS, Manchester, STFC Daresbury • Tasks ØImplementation of the experimental facilities into GEANT • Ongoing, first stage complete ØSimulation of key experiments • Ongoing, some source simulations done ØVerification of tracking algorithms • Started
Implementation of the experimental facilities into GEANT • Geant 4 code has been successfully installed with the existing experimental facilities. • Some more need to be implemented during the next few months.
Packages • GEANT 4 AGATA code (E. Farnea) • A tracking code: – 2 availables: • mgt code (D. Bazzacco) • oft code (A. Lopez-Martens) – An analysis package: xtrackn, ROOT based programs (Gamma. Ware) • Gamma. Ware (O. Stezowki) – Convert files. ags from the Radware/ENSDF level scheme directory to simulation input file • Production cross section codes – Ex: Fusion evaporation (CASCADE, COMPA )
Status & near future plans • A UK AGATA WG is being formed (mailing list, regular meetings) • Obtain, install and learn how to use the AGATA simulation – Get the packages running • GEANT 4 AGATA code ( ) • tracking codes ( ) • Gamma. Ware ( ) • Cross section codes (to get) – Reproduce the simulation results previously reported (on going) • Simulate source runs and compare with data – 137 Cs or 60 Co • Simulate first in-beam test and compare with data
Basic tests of codes and validation 1 p 3 p 2 p 4 p The Geant 4 code has been tested to generate various geometries of AGATA array.
Basic tests of codes and validation Geant 4 simulation 60 Co source e P/T = 62% Efficiency=33% g co de P/T = 63% Efficiency=37% cod ng i rack y. T a Ors Pad ova Tra ckin The P/T are almost same for both the codes. Efficiencies are different. (Clustering mechanism are different in ORSAY code)
WP 3: Milestones Table 1: Milestones achieved in the last six months Milestone No. Work Package Milestone Target Date Status M 3. 1 WP 3 Preparatory work complete 02 April 09 Complete M 3. 2 WP 3 Simulation codes set up in the UK 05 July 09 Complete Table 2: Milestones due in the next six months Milestone no. Work Package Milestone Target Date M 3. 3 WP 3 Simulation for UK led experiments for the January LNL PAC 31 Dec 09
WP 4 Support for setup and running of initial experiments UWS, Liverpool, Manchester, Surrey, York, STFC Daresbury • Tasks Ø Installation of AGATA detectors at Legnaro National Laboratory • Ongoing, first detector installed Ø Running of the test experiments with sources and inbeam • Ongoing, source and some in-beam test done • Future task Ø Use the output of WP 2 to optimise the analysis
Stages in set up and commissioning Stage 0 Stage 1 Stage 2 Stage 3 Stage 4 Test of a triple cluster with a radioactive source In-beam test of a triple cluster with a simple ancillary detector In-beam test of three triple clusters In-beam test of triple clusters with the PRISMA spectrometer
Stage 0: Radioactive sources test To test data-acquisition system, front-end electronics, mechanical support etc. • Week 8 (16 th – 20 th February 2009)
Stage 1: First in-beam test To test system in real experimental conditions, measure overall position resolution etc. • Week 12 (16 th – 20 th March 2009) • 30 Si at 70 Me. V on thin 12 C target (with and without stopper downstream of target) • One asymmetric cluster at θ=90○ • Inverse kinematics – high recoil velocity • Different target to detector distances to determine position resolution
Mechanical Support Frame AGATA detector at Legnaro PRISMA spectrometer
WP 4: Next 6 months Further commissioning experiments • Stage 2 July 2009 – AGATA module with an ancillary detector • Stage 3 Later in 2009 – Increase number of AGATA modules to three
WP 4: Milestones Table 1: Milestones achieved in the last six months Milestone Work Milestone No. Package Target Date Status M 4. 1 WP 4 Source test of a triple cluster 18 Feb 09 Complete M 4. 2 WP 4 In beam test of a triple cluster 19 Mar 09 Complete Table 2: Milestones due in the next six months Milestone no. Work Package Milestone Target Date M 4. 3 WP 4 In-beam test of a triple cluster with ancillary detector 6 July 09 M 4. 4 WP 4 UWS PDRA started work 1 July 09 M 4. 5 WP 4 In-beam test of first 3 triple clusters 31 Dec 09
WP 5 Electronics and software STFC Daresbury, Liverpool • Tasks Ø Support installation at Legnaro • Ongoing • Preparation work started Ø Digitiser electronics for the next period (inc upgrade)
Support installation at Legnaro Digitiser work for demonstrator • Firmware upgrade done to shut down automatically if temperature reaches 40 C (previously relied on software) • Delivery status: Task Done Shipped To do Assemble Digitisers (UK) 18 Functional Test of digitisers (UK) 18 13 0 Performance test of digitisers (France) 7 7 11* Delivery to AGATA (from France) 7 7 11 0 * Out of these 11 digitisers, 3 are in Turkey, 3 are in France, 5 in UK
Support installation at Legnaro Pre-processing work for demonstrator • Management of team only; no hardware or firmware work except advice/consultancy as required. • Video conference every 2 weeks + AGATA week team meeting face to face.
Support installation at Legnaro Slow control and GUI work for demonstrator • Recent decision by the team to adopt Vic Pucknell’s (UK) software philosophy for Digitser control as the standard for all AGATA front end electronics control • Commands sent to hardware known as “Vic Orders” • Vic Pucknell has written example code against which to test application code written by others.
Digitiser electronics for the next period Digitiser work • Collaboration has decided to build 6 digitisers of the current design for the end 2010. Four will be from the UK grant. Agreed with AGATA collaboration. • Discussions have started to determine what upgrades are needed for the next batch of digitisers (replacement of obsolete parts for example). Expected to take several months.
WP 5 : next 6 months • Continue to support installation at Legnaro as required • Start to build and test 6 more digitisers to existing design • Continue discussion on digitiser proposal with rest of collaboration • Start work on specification of new digitiser electronics
WP 5: Milestones Table 2: Milestones due in the next six months Milestone no. Work Package Milestone Target Date M 5. 1 WP 5 Agree detailed design specs for upgraded digitisers 4 Dec 09 M 5. 2 WP 5 Funding agreed for first batch of digitisers 30 Jun 09
WP 6: Mechanical Design STFC Daresbury, Liverpool • Tasks: ØSupport for AGATA at Legnaro • Investigation of mechanical problems ØInstallation of detectors • Several visit to Legnaro needed ØDesign of new support structures • Awaiting collaboration decision
Installation of detectors at Legnaro Setting the Detector still doesn’t come down square in jig, but the situation is much improved
Installation of detectors at Legnaro Measuring the Setting Fixture Support jig measured with tracker. Results to be compiled
Installation of detectors at Legnaro Detectors within specification when installed. Report to be written
WP 6: Next 6 months • Determine the source of the deflections using Finite Element Analysis. • Modify necessary components. • Start design of new support frame once the decision on the location of the next host laboratory has been taken.
WP 6: Milestones Table 2: Milestones due in the next six months Milestone no. Work Package Milestone Target Date M 6. 1 WP 6 Agree design spec for next host lab 22 Oct 09
WP 7: Project Management Liverpool and STFC Daresbury • Tasks: ØEstablish UK management structure • In place and working ØContribute to AGATA international mangement • ongoing
WP 7: Milestones Table 1: Milestones achieved in the last six months Milestone No. Work Package Milestone Target Date Status M 7. 1 WP 7 Agree UK Membership of AGATA collaboration meeting 1 Sept 08 Complete M 7. 2 WP 7 Establish UK management structure 30 Sept 08 Complete M 7. 3 WP 7 1 st Meeting of UK Management group Nov 08 Complete M 7. 4 WP 7 2 nd Meeting of UK Management group Jan 09 Complete M 7. 5 WP 7 3 rd Meeting of UK Management group March 09 Complete M 7. 6 WP 7 4 th Meeting of UK Management group June 09 Complete
Table 2: Milestones due in the next six months Milestone no. Work Package Milestone Target Date M 7. 7 WP 7 5 th Meeting of UK Management Sep 09 group M 7. 8 WP 7 6 th Meeting of UK Management Jan 10 group
WP 8: Equipment procurement and running costs Liverpool and STFC Daresbury • Tasks: ØPurchase of detectors and cryostat • Initial order placed ØPurchase of electronics • Specification being agreed ØPayment of Running costs • First payment made
Detectors / Cryostat • Three capsules ordered –Delivery from August 2010 • Triple Cryostat specification being formally agreed Electronics • Plan for the next phase being agreed with the collaboration
Running costs • AGATA Steering Committee has agreed the running costs for 2009 • Costs will be reviewed each year depending on actual use and number of detectors • Costs for 2010 will be agreed in late 2009 • First payment made
WP 8: Milestones Table 1: Milestones achieved in the last six months Milestone Work No. Package Milestone Target Date Status M 8. 1 WP 8 Order AGATA detector capsules 3 March 09 Complete M 8. 2 WP 8 Agree running costs with collaboration 3 March 09 Complete M 8. 3 WP 8 Payment of first running cost instalment 3 March 09 Complete M 8. 4 WP 8 First payment (20%) for detector capsules 4 May 09 Complete Table 2: Milestones due in the next six months Milestone no. Work Package Milestone Target Date M 8. 5 WP 8 Order triple cryostat and electronics modules 3 July 09
Contingency / Working Allowance • Grant bid was made at 2007 prices • Equipment prices have increased by ~5% • Significant change in exchange rate –Bid 1. 43 euro = £ 1 $2 = £ 1 –Now 1. 11 euro = £ 1 $1. 6 = £ 1 • Smaller number of electronics modules funded (re bid) will lead to higher unit costs Known or estimated changes summarised in the table
Calls on the contingency / working allowance Item Award (£k) Increase (£k) Detector capsules 393 160 Exchange rate Cryostat 68 20 Exchange rate Electronics 253 41. 5 Smaller numbers Running costs 77. 5 22. 3 Exchange rate Research student 60 1 Increase (actual) 160 Increase (estimate) 84. 8 Working allowance 265 Main Reason Student left