**CDR Technical Notes**

The AMS-02 Critical Design Review was conducted May 13, 14, 15 and 16,
2003 at the Lunar and Planetary Sciences Institute, Houston, Texas.
Those participating in the CDR included AMS experiment Collaboration
personnel representing Italy, France, Germany, Russia, England,
Portugal, Spain, and the USA. Other participating US Government
institutions included representatives from Department of Energy,
NASA/HQ, GSFC, and KSC. JSC representation included personnel from STS,
ISS, Crew, and technical representatives from Engineering Development
Directorate. The purpose of the CDR was to review the AMS Integration
hardware design, development certification plans, documentation, all
interfaces, manufacturing processes, fabrication, assembly, and test of
both flight hardware and GSE, software, and data acquisition hardware
and plans, ground processing and pre launch plans. Any issues relating
to the mission success of the collaboration/ DOE experiment were defined
as non-RIDable items (this is consistent with the NASA/DOE Memorandum of
agreement, dated 1995). Any issues involving the NASA/LMSO integration
hardware, Safety, or Interfaces were defined as rid able.

Mr. Jim Bates, NASA AMS Mission Manager, opened the CDR with an
introduction. Mr. Bates presented the ground rules by which the CDR
would be organized, and conducted. Mr. Bates also recognized and thanked
all participants for their support to the AMS Project.

Following Mr. Bates introduction, Professor Sam Ting, the AMS
collaboration leader, presented a very extensive overview of the
scientific objectives of AMS, the scientific value of each subsystem of
the AMS experiment, an overview of the entire collaboration and the
functions of each international participant, a brief description of the
hardware, and the scientific principles and objectives for each
experiment sub-system.

Mr. Ken Bollweg, LMSO Project Manager for AMS-02, followed Professor
Ting. Mr. Bollweg's presentation included an overview of the entire AMS,
including experiment components, such as the cryo magnet, TRD, TOF, ACC,
Tracker, RICH, ECAL, electronics crates, star tracker, thermal control
system, and integration hardware. Mr. Bollweg's presentation included
hardware description, materials, testing, analyses, dynamic frequencies,
safety margins, load factors, certification testing, magnetic field test
and analysis, interface testing thermal vacuum tests, life testing of
some items, and the KSC pre flight flow plan. Mr. Bollweg presented all
safety related information for each item covered in his presentation. He
also presented an overall AMS weight summary. Some questions were asked
by reviewers, however most of the questions were requests for additional
details. Several members of the LMSO Technical Team followed Mr.
Bollweg's presentation. Their presentations were detailed descriptions
and design test, and analysis summaries of the NASA/LMSO AMS integration
hardware.

Mr. Ross Harold presented the USS-02 design, interfaces with the
experiment hardware, and interfaces with the STS, and ISS, structural
requirements, materials, etc. Mr. Phil Mott presented the details of the
Vacuum Case design, structural requirements, welding, interfaces,
assembly details, materials, testing, etc. Mr. J. Kastelic presented the
details of the PAS, which included the mechanical design requirements,
static testing, ISS/AMS IVT testing at KSC, and future thermal tests
planned.

Mr. Paul Nemeth presented a design overview of the AMS avionics, flight
wire harnesses, and KSC electronics verification tests. These included
the power distribution box and PDB interfaces, cryo avionics box, UPS,
Launch Pad and STS interface connections and tests, resource
requirements, an overview of the data system, data compatibility
testing, power compatibility testing, and EMI/EMC testing.

Mr. Peter Dennett presented the AMS-02 Digital Data Retrieval Systems
purpose, design overview, operations profile, and communications
specifications. Mr. Dennett also presented an detailed overview of the
ACOP which included the express integration agreement, purpose of ACOP,
interface requirements, operations scenario, mechanical design, cooling
requirements, power and weight budgets. Command and data handling
design, software design and architecture, and a planned low fidelity
model which can be used in ground testing and possibly crew training.
Mr. Paul Nemeth concluded day one of the AMS-02 CDR with a presentation
of AMS Mission Operations. This included Pre-Launch ops, ascent, mission
abort, on-orbit STS, on orbit handover to ISS, ISS on orbit ops, end of
mission operations, EVA interfaces, and a summary of NBL testing at JSC.

Day two of the CDR began with Mr. Steve Harrison presenting details of
the cryo magnet design. Mr. Harrison included cryo magnet structure,
avionics, cryo systems, cryo coolers and GSE. Details were presented for
cryo cooling, cryo safety, coil design, non-linear straps, cryo valves,
avionics, self-protection systems, magnet charging, and quenching. One
specific question was asked concerning burst disc installation problem
if the burst discs were installed incorrectly during assembly. This item
was referred to a magnet splinter group to address the issue, and
provide adequate installation, test, and quality control procedures to
preclude backwards installation of the discs.

Mr. A. Gretchko presented an overview of the cryo system GSE, which
included top off of the system at KSC, system charging, GSE systems
components list, and vacuum pumps. Mr. C. Tutt next presented an
overview of the non-linear straps (an integral part of the cryo magnet
structural safety design). This included design and certification
testing and analysis. Results of and on going data analysis of the
static and dynamic testing performed at Lockheed, Denver, strap
verification plan, test to failure, warm and cold tests planned, modal
testing of the full-up system, analysis plans for loads, stress,
fracture control, test results/analysis correlation, documentation/test
plans/reports, and future work. Mr. Reyko Henning then presented an
overview of the TRD Gas System which included a schematic arrangement,
vibration test results for boxes and manifold, assessment of magnetic
field results on components, description of electrical and mechanical
components, description of pressure vessels and valves, circulation
pumps, etc., functional testing and schedule, assembly schedule and
thermal vacuum test plans.

Mr. C. Lauritzen then presented the AMS structural certification
analysis plans for primary and secondary structure, including load
factors for lift off, on orbit ISS, and landing, description of math
models, definition of interface loads, dynamic clearance assessments,
coupled loads, quasi-static loads, static loads, etc. Mr. Laurentzen
included an overview of how all the analyses would flow together to
provide structural certification of the AMS payload.

Mr. C. Balasubramanian then presented the AMS stress analysis plans. He
stated that the governing requirements were spelled out in the AMS-02
structural verification Plan that includes the vacuum case and
components, USS-02 and components, and PAS.

Mr. Balasubramanian then pointed out that components with low margins of
safety would be tested to destruction. Mr. Balasubramanian also
presented the AMS-02 Fracture control program. He identified the
critical components, identified NASA controlling documents, listed PIH
fracture critical and non-fracture critical parts, presented fracture
control plans for fasteners and shear pins. Results of vacuum case and
components fracture control results and plans were also presented.

Mr. D Rycicki presented an overview of the welding and brazing of AMS
components. He listed the items which will be welded and/or brazed, the
driving requirements documentation, the processes to be used,
requirements/certification and training, inspections and NDE testing
considered in the hardware design for the helium tank plumbing, tubing,
trunnion and bridge beams. He showed videos of some of the welding
techniques to be used in the AMS manufacturing and Assembly. Mr. D. Lear
then presented the MM/OD risk assessment, including a list of items
assessed, identification of risk items, and a summary of the
odds/probability of micrometeoroid impacts on the vacuum case and TRD
over an on orbit stay from 1 to 5 years. The final presentation on day 2
of the CDR was by Mr. C. Clark who presented an overview of the AMS
thermal systems design and analysis. Included was a thermal overview,
definition of defining documentation, requirements, and environments for
analysis. Assessment of operations thermal scenarios, AMS thermal
responsibilities, and results of component analyses were presented along
with final thermal certification plans.

# No notes taken on morning of Day #3.

On the afternoon of day three, RID's were submitted to RID control,
where they were logged in, given a number, and then submitted to
technical team leaders for review with RID originators, and for written
comments. After each team leader reviewed and provided a comment or
recommendation, the RID's were collected and prepared for review by the
pre-board chairmen Mr. Ken Bollweg.

On the morning of day four, Mr. Bollweg reviewed and dispositioned each
RID.

Mr. Bollweg presented to the board, chaired by Mr. Bates a summary of
each RID, it's purpose, and his disposition of each one. A summary of
the AMS-02 RID's and their disposition is as follows**:**

Total Rids received 121

#### Accepted with Actions 61

#### Rolled up to "parent" Rid 13

##### Closed w/Satisfactory Explanation 22

##### Disapproved 22

Withdrawn 3

There were no RIDS which were required to be submitted for specific
board action. All RID'S were dispositioned by Mr. Bollweg and the board
approved of Mr. Bollweg's disposition of the RID's with some small
changes.

Mr. Bates thanked all participants for their cooperation and stated that
theAMS-02 project has been aided by the detailed CDR review process.

  --------------------------------- -------------------------------------
  **NAME**                          **ORGANIZATION**

  **CDR BOARD**                     

  Bates, Jim                        NASA/JSC

  Rogers, Joseph                    NASA/JSC/ES2

  Scheib, James                     NASA/JSC/OZ3

  Miley, Bob                        ISS/Boeing

  Conwell, J.J.                     JSC/STS

  Standford, John                   NASA/JSC/NT3

                                    

  **AMS TEAM**                      

  Alia, Sergio                      CGS

  Balasubramanian, Chittur          LMSO

  Battiston, Roberto                INFN

  Becker, Robert                    MIT

  Berdugo, Javier                   CIEMAT

  Bertoli, Andrea                   CGS

  Bindi, Veronica                   INFN

  Blackmer, Stan                    LMSO

  Blanchard, Doug                   NASA/JSC

  Bollweg, Ken                      LMSO

  Braccia-a-Ferri Fabio             ASI

  Breon, Susan R.                   NASA/GSFC

  Brown, Tony                       LMSO

  Burger, Joe                       MIT

  Cadoux, Franck                    Annecy

  Capell, Mike                      MIT

  Carter, Howard                    LMSO

  Clark, Craig                      LMSO

  Contin, Andrea                    University of Bologna

  Dennett, Peter                    Padsoft

  Dunker, Chris                     NASA/GSFC

  Fisher, Peter                     MIT

  Fohey, Mike                       LMSO

  Garciulo, Corrado                 CGS

  Grechko, Alexander                CERN

  Gutierrez, Manuel                 LMSO

  Harold, Ross                      LMSO

  Harrison, Stephen                 SCL

  Henning, Reyco                    MIT

  Hoang, Peter                      LMSO

  Hofer, Hans                       ETH

  Hungerford, Bill                  LMSO

  Jones, Vernon                     NASA/HQ

  Ju, Hsing                         LMSO

  Kastelic, Joe                     LMSO

  Kenney, Gerry                     LMSO

  Kounine, Andrei                   MIT

  Koutsenko, Valdimir               MIT

  Laurenti, Giuliano                INFN

  Lauritzen, Carl                   LMSO

  Lebedev, Alexei                   MIT

  Li, Louis                         LMSO

  LiPoma, Phil                      LMSO

  Lopez, Lollie                     LMSO

  Luebelsmeyer, Klaus               RWTH Aachen

  Martin, Trent                     LMSO

  Mason, Peter                      Cal Tech/JPL

  Milward, Steven                   SCL

  Mohler, Robert                    LMSO

  Molina, Marco                     Carlo Gavazzi Space

  Mott, Phillip                     LMSO

  Nemeth, Paul                      LMSO

  Nguyen, Ken                       LMSO

  Posada, Adolfo                    CRISA-Spain

  Prince, Gary D                    LMSO

  Read, Dean                        LMSO

  Ross, John                        SCL

  Sistilli, Mark                    NASA/HQ

  Smith-Weaver, Suzanne             UK

  Sommer, Bruce                     LMSO

  Ting, Samuel                      MIT/CERN

  Ting, Susan                       MIT

  Tinsler, Thomas                   LMSO

  Titus, Christine                  MIT

  Torres, William                   LMSO

  Tutt, Chris                       LMSO

  Verlaat, Bart                     Nikhef

  Vialle, Jean-Pierre               Annecy

  Vonesch, Rita                     ETH

  Wang, Saike                       LMSO

  Weeks, Ernie                      LMSO

                                    

  **NASA/JSC/ISS/STS/KSC            
  REVIEWERS**                       

  Arnold, Larissa                   NASA/JSC/DO5

  Bailey, Chuck                     NASA/JSC/NC

  Bartlett, John                    NASA/OZ2

  Beard, Grady                      LMSO

  Blue, Regina                      NASA/MOD

  Blum, Robert                      TBE

  Breit, Joseph                     Boeing

  Brown, David                      Geo Control

  Bussell, John                     OM/Boeing

  Chang, Yuan-Chyau                 NASA/JSC

  Chang-Diaz, Franklin              NASA/JSC/CB

  Collins, Christine                NASA/GSFC

  Cook, Gene                        NASA/JSC/OZ3

  Corbin, Cheryl                    SAIC

  de Boer, Wim                      Univ. of Karlsruhe

  Denny, Clinton                    WGI

  Engelbert, Dennis                 Boeing

  Flynn, Howard                     NASA/JSC/EP4

  Forrest, Steve                    Blackhawk

  Fugua, Steven                     SAIC

  Gerlach, Mike                     USA

  Golick, Richard                   USA

  Haggard, J. Alan                  USA

  Harcinske, John                   Boeing

  Harris, Mary                      NASA/JSC

  Hartgerink, Mariella              NASA/STS

  Hastie, Bruce                     NASA/JSC/ER3

  Heartsill, Amy                    NASA/JSC

  Hendrick, Angus                   NASA/JSC

  Henry, Paul                       TBE

  Hossain, Sabbir                   NASA/JSC/EP4

  Howard, Ralph                     TBE

  Hudson, Mike                      Boeing/Safety

  Hugger, Renee                     SAIC

  Ibanez, Frank                     USA

  Iwasa, Masaharu                   Washington Group

  James, George                     NASA/JSC

  Jaurigue, Yvonne                  Boeing

  Jeevarajan, Judith                LMSO

  Kavandi, Janet                    NASA/JSC/CB

  Koenig, Mark                      Boeing

  Le, Geri                          NASA/JS/OM7

  Lo, Stanley                       Boeing

  Mona Whitworth                    Boeing

  Manha, Bill                       NASA/JSC/EP4

  Martinez, Nick                    LMSO

  Mathis, Johnny                    KSC

  McCall, Michael                   NASA/WGI

  McCormick, James                  Boeing

  McDonald, Patrick                 LMSO

  Moore, Lili                       NASA/JSC/EP4

  Mooty, Alicia                     Boeing/PEI

  Nelson, Arthur                    NASA/JSC/NC

  Okafor, Godfrey                   NASA/JSC/NT152

  Parma, George                     NASA/JSC/EA

  Provini, Mario                    Boeing

  Ramos, Fernando                   NASA/JSC/CB

  Rarick, Douglas                   NASA/JSC

  Rehm, Raymond                     LMSO

  Rominger, Kent (Capt)             NASA/JSC/CB

  Rouen, Michael                    NASA/JSC/EC5

  Sanchez, Rick                     NASA/JSC/SM

  Sanders, Vic                      Boeing

  Sauceda, Tania                    SAIC

  Scully, Bob                       NASA/EV4

  Selmarten, John                   USA

  Shell, Mike                       NASA/MSFC

  Stevenson, L. D.                  Barrios

  Urban, Tim                        LMSO

  Vaughan, Anne                     USA

  Wilhelm, Gary                     GFSC

  Yoder, Don                        USA

  Zamaitis, Joseph (Joe)            NASA/JSC/EB

                                    

                                    

  **DOE REVIEWERS**                 

  Byon-Wagner, Aesook               DOE

  Meador, Steven                    US/DOE

  O\'Fallon, John                   DOE

                                    

  **IAT REVIEWERS**                 

  Adams, Mike                       NASA/GSFC

  Bietry, Ray                       LaRC/Orbiter

  Butler, Dan                       NASA/GSFC

  Calvo, Bob                        NASA/GSFC

  Cheng, Edward                     Conceptual Analytics

  Corbo, Jim                        GSFC

  Langford, Don                     JPL

  Ritter, Bob                       GSFC/OSC

  Shick, Donald                     NASA/LRC
  --------------------------------- -------------------------------------