AMS R. Battiston AMS-02 on the International Space Station Presented to INFN II Committee September 30th 2008

Time of Flight F. Palmonari, A. Contin, G. Laurenti Bologna TRD B. Borgia, Rome Silicon Tracker R. Battistion, G. Ambrosi Perugia Calorimeter M. Incagli, F. Cervelli, C. Vannini Pisa Magnet RICH G. Laurenti, Bologna Requires ¼ of a shuttle to ISS AMS on ISS

The AMS detector measures cosmic rays with accuracy: 1- The coordinates: to 10 microns 2- The travel time: 150 ps 3- The velocity: to an accuracy of 1 in 1000 Particle identification : 1/10 10 The AMS detector

AMS Event Display of ground level cosmic ray – side views

AMS Event Display of ground level cosmic ray – top view Cherenkov ring reconstructed in RICH The expected data rate from AMS is 15 terabytes per year, more information than is contained in the entire printed collection of the US Library of Congress.

To use the bending power of the magnet, we have built a state of the art Tracking Detector based on 8 thin layers of Silicon Detectors, with a spatial accuracy better than 10 micron THE AMS SILICON TRACKER TOF ECAL RICH TOF Tracker Super- conducting Magnet Coils AMS Cryocooler He Vessel TRD

Silicon Tracker Integration at CERN

Time of Flight (TOF) Very precise space borne Time of Flight TOF ECAL RICH TOF Tracker Super- conducting Magnet Coils AMS Cryocooler He Vessel TRD Measures the Time of relativistic particles to 150 ps

Preventivi 2009 INFN Gr.II - Esp. AMS2 TOF Bologna- F.Palmonari 11 Overview del Gruppo AMS-TOF Bologna 7 novembre 2007 Clean Room di AMS-02, consegna dell’UTOF nella camera pulita di AMS-02 al CERN, dopo il test TVT al SERM di Terni Nella foto mancano A.Basili (a Taiwan per l’elettronica) A.Contin, F.Cindolo e la dottoranda C.Vitullo Dal novembre 2007 il lavoro sul detector si e’ svolto al CERN. L’elettronica di volo e’ stata consegnata in aprile e i test TVT a Terni sono terminati nel luglio 2008 ed ora sono in fase di integrazione in camera pulita F:Palmonari G.Laurenti L.Quadrani M.Lolli G.Castellini R.Pilastrini V.Bindi C.Guandalini

TOF pre-integration UTOF In December 2007 Upper TOF has been integrated on AMS

TOF pre-integration LTOF In March 2008 Lower TOF has been integrated on AMS

Upper TOF integration on AMS Plane 1 side P and plane 2 side N are read out. RAM radiator Plane 1 side P Plane 2 side N S1 QM

Upper TOF integration on AMS PMTs on UTOF plane 1 side P and plane 2 side N connected to QM S1-crate through flight cables and powered by SHV1-Brick. Since beginning of March 2008 the EM-Scrate has been replaced by a QM-Scrate.

PMTs on LTOF plane 3 and 4 side N plane connected to EM S-Crate and powered by FM SHV-Brick. The lower tracker cooling circuit are blocking the cabling access to the LTOF panel of the plane 3 side p reworking still in progress. Lower TOF: April 2008

E. Choumilov, TIM Time Resolution (all counters)Time Resolution (outer excluded) Velocity (3 layers)Velocity (4 layers) 161 ps/pad 156 ps/pad Res. 4.6 % at Beta=1Res. 3.9 % at Beta=1 TOF analysis is in progress

TOF & ACC settings Since December 07 detector procedures and settings have been improved and debugged. In parallel with data acquisition an intense debug activity on the DAQ system and on Run Control is started in order to fix some problems: trigger rate, dead time, CRC error, de-synchronization error, SFECs readout, Graphical interface used to set up TOF electronics and detector: SDR2 controller - switch on the FE boards. - enable SFECs read out. HV Brick controller - set all DC/DC to HV value. - set all Linear regulator to HV value. SPT2 Pro controller - verify scaler values are consistent. - set the output signals to JLV1. SFET2 & SFEA2 controller - TDC configuration. - set low, high and S-high thresholds TOF configuration procedures were too long and complicated. A standard and automatic procedure has been implemented and since May it's in use.

HV-Brick Vibration test and characterizations All 5 HV-Bricks (4FM+1FS) has been characterized in Bologna INFN laboratories, vibrated at the Galileo Avionica (Firenze) and tested again at CERN (March 2008). Asse Z Asse XAsse Y 03/03/2008

TVT on flight S-Crate and SHV Brick In May 14 th -24 th thermal vacuum tests on 3 flight S-crates and 3 flight SHV- brick has been successfully performed at the SERMS laboratory. In July 20 th - 30 th after AMS de-integration, the thermal vacuum tests on 2 flight S-crates and 2 flight SHV-brick has been successfully performed.

Electromagnetic Calorimeter (ECAL) TOF ECAL RICH TOF Tracker Super- conducting Magnet Coils AMS Cryocooler He Vessel TRD A precision 3-dimensional measurement of the directions and energies of light rays and electrons

ASSEMBLY AND INTEGRATION ECAL INTEGRATION ON UNIVERSAL SUPPORT STRUCTURE (LUSS) STUDIES OF CABLING AND INTEGRATION ON USSII

The AMS electronics is based on accelerator physics technologies. It is ~ 10 times faster than commercial space electronics. The 300,000 channels of electronics are compatible with the total electronics channels on the ISS Electronics coordinator G. Ambrosi (INFN)

AMS de-integration July 2008

Ken Bollweg/NASA AMS Magnet Progress since February & Current Status 21 July, 2008 AMS CERN

Then the access platforms were load tested

VCS assembly (continued)

Superinsulation (MLI Blankets) and VCS Installation (con’t)

Magnet External Components

AMS Magnet Status The Magnet is scheduled to be delivered to CERN on October 24th

AMS Magnet Status 2008

Next future... Final integration at CERN (beginning 2009)‏ Test Beam at CERN TVT ESTEC (Spring/Summer 2009)‏ KSC Houston (end 2009)

La gondola è realizzata con fondi ASI e la partecipazione degli ingegneri di Roma 1, Pisa e Perugia

MSFC Huntsville, AL Regional Center Data Analysis Data Archive Data Server for Europe Milano and CNAF Bologna, Italy University Park, MD UMD Secondary Ops UMD Data Analysis Data Archive Data Server for U.S. CERN Primary Operations CERN Data Distribution & Coordination Geneva, Switzerland The AMS Science Operation and Data Analysis Center

The issues of antimatter in the universe and the origin of Dark Matter probe the foundations of modern physics. AMS AMS is the only large scientific experiment to study these issues directly in space. AMS is a unique experiment on the $100 billion ISS. The Cosmos is the Ultimate Laboratory. Cosmic rays can be observed at energies higher than any accelerator.

Note: 150 M$ in 2009 and in 2010

La legge autorizzativa del bilancio NASA è stata firmata da Bush domenica per cui la NASA ha iniziato la programmazione del volo STS134 Il processo continuerà dopo le elezioni, con la legge appropriativa

Richieste 2008 A) alla scorsa riunione non sono stati sbloccati i fondi delle missioni estere. I gruppi hanno continuato a lavorare intensamente al CERN esaurendo sia i fondi INFN che i fondi ASI, al punto che abbiamo dovuto utilizzare fondi ASI previsti per l'anno prossimo. B) si chiedono inoltre Euro sulla voce costruzioni apparati tra Bologna e Perugia, per fare rimoborsare il MIT relativamente ai costi dei componenti utilizzati per le schede FM dei vari sottosistemi. Si propone di usare a tale scopo il sj di Milano sulla voce inventariabile, che quest' anno non puo' essere utilizzato. Bologna Sblocco 9.0 ME integrazione e commissioning al CERN Sblocco 10.0 Cost App: parte rimborso componentistica acquistata da MIT per la realizzazione delle schede flight a Taiwan (da sj inventariabile di Milano) (vedi Fattura 1) il resto ( 11 K€ dato che una parte pari a 6 k€ è a carico di Aachen) sarà incluso nelle richieste di Bologna per l'anno prossimo Milano Sblocco 8.0 ME attività sviluppo calcolo e networking Sblocco 3.5 consumi a Milano e al CERN (cap da missioni estere) Perugia Sblocco 16.5 ME integrazione e commissioning al CERN Sblocco 25.0 Cost App: rimborso componentistica acquistata da MIT per la realizzazione delle schede flight a Taiwan (da sj inventariabile di Milano) (Vedi Fatture 2,3,4) Pisa Sblocco 9.0 ME integrazione e commissioning al CERN Roma 1 Sblocco 8.5 ME (test ad Aachen e CERN elettronica QM2 e FM di controllo sistema gas)