DESY-PROJECT

IceCube Digital Optical

Module Production

PROJEKT-ABLAUF

Dr. H. Waldmann (bis 08/07) 100%

Dr. J. Berdermann ( postdoc) 65%

xx

S. HenzeJ. PieperS. Ladegast

2932 T€

4675 T€

1243 T€

OMP-Projekt Investitionen

#OM

605

620

676

512

2750

257

480

233

1190

2932

OMP-Projekt PersonalbedarfWeeks kEuro

Weeks kEuro

Produktion 07 314.8

Physiker 48 62.8Postdoc 33 33.6Ingenieure 24 26.4Techniker/Werkstaetten 96 192.0

Produktion 06 222.8

Physiker 35 38.5 Postdoc 23 24.5 Ingenieure 18 19.8 Techniker/Werkstaetten 70 140.0

Produktion 08 193.6

Physiker 12 15.7Postdoc 32 32.4Ingenieure 16 17.5Techniker/Werkstaetten 64 128.0

1243xx

DOM-Production 2004-2008

YearYear DOMs

produced

DOMs OK

finalDOMs

shipped

2004 60 45 0.75 28

2005 160 159 0.99 160

2006 257 255 0.99 224

2007 480 477 0.99 480

2008 233 232 0.99 276

∑ 1190 1168 0.98 1168

only ~1% of DOMs were cannibalized – goal was 5% or bettergood components are used in next years production

2004 DOM TESTING + USAGE

time load good bad comment

FAT1 20.9.-5.10.04 25 20 5 3 gel, 1 MB, 1 HV

FAT2 4.11.-17.11.04 21 8 13 13 gel, 1 MB

FAT3 10.1.-20.1.05 20 17 3 1 MB,3 FB,1 HV

FAT4 24.2.-7.3.05 8 8 0 use 5 CAEN HV

location number

quality purpose

Pole 42 good deploy

DFL 3 good standard

Madison 8 bad Check

Dortmund

1 bad HV-tests

- 6 bad cannibalize

Production efficiency:

P2004 = 75 %

Wanted:

P = 95 %

2005 DOM TESTING Time load good bad FAT

FAT5 10.06.-27.06. 51 37 14 0.73

FAT6 12.07.-8.08 54 49 5 0.91

FAT7 29.08.-12.09 57 47 10 0.82

FAT8 14.9.-30.09 26 20 6 0.77

FAT9 14.11.-01.12 6 6 0 1.00

*) in all cases +3 permanent DOM’s from FAT3 for comparison

FAT 7

Passed

STF

FB

Dark Rates

Comm/other

Gel

FAT 8

Passed

STF

FB

Dark Rates

Comm/other

Gel

FAT 9

Passed

STF

FB

Dark Rates

Comm/other

GelFAT5

FAT6

FAT7

FAT8

FAT9

2006 DOM TESTINGtime load good bad FAT

FAT10 19.06- 30.06 57 46 11 0.81

FAT11 19.07-04.08 57 50 7 0.88

FAT12 09.08-25.08 57 53 4 0.93

FAT13 05.09-20.09 51 48 3 0.94

FAT14 12.10-27.10 55 49 6 0.89

FAT15 27.10-15.11 14 12 2 0.86

FAT 10

Passed

STF

FB

Dark Rates

Comm/other

Gel FAT 11

Passed

STF

FB

Dark Rates

Comm/other

Gel

FAT 12

Passed

STF

FB

Dark Rates

Comm/other

Gel

FAT 13

Passed

STF

FB

Dark Rates

Comm/other

Gel

FAT 14

Passed

STF

FB

Dark Rates

Comm/other

Gel

FAT 15

Passed

STF

FB

Dark Rates

Comm/other

Gel

FAT10

FAT11

FAT12

FAT13

FAT14

FAT15

2007 DOM TESTING

time load good bad FAT

FAT16 29.01.-14.02. 57 50 7 0.88

FAT17 28.02.-17.03. 57 49 8 0.86

FAT18 22.03-11.04. 31 28 3 0.90

FAT19 19.04.-07.05. 57 50 7 0.88

FAT20 01.06.-20.06. 57 52 5 0.91

FAT21 12.07.-24.07. 57 52 5 0.91

FAT22 10.08.-15.09. 57 48 9 0.84

FAT23 25.10.-14.11. 39 33 6 0.85

FAT24 21.11.-06.12. 57 48 9 0.84

FAT 16

Passed

STF

FB

Dark Rates

Comm/other

Gel

FAT 17

Passed

STF

FB

Dark Rates

Comm/other

Gel

FAT 18

1

2

3

4

5

6

FAT 19

1

2

3

4

5

6

FAT 20

Passed

STF

FB

Dark Rates

Comm/other

Gel

FAT 21

Passed

STF

FB

Dark Rates

Comm/other

Gel

FAT 22

Passed

STF

FB

Dark Rates

Comm/other

Gel

FAT 23

Passed

STF

FB

Dark Rates

Comm/other

Gel

FAT 24

Passed

STF

FB

Dark Rates

Comm/other

Gel

2008 DOM TESTING

time load good bad FAT

FAT25 09.01.-24.01. 57 48 9 0.84

FAT26 20.02.-10.03. 57 49 8 0.86

FAT27 28.03.-14.04. 57 50 7 0.88

FAT28 14.05.-30.05. 57 49 8 0.86

FAT29 12.06.-01.07 57 47 10 0.82

FAT30 07.07.-23.07. 57 49 8 0.86

FAT31 14.08.-31.08. 22 19 3 0.86

FAT 24

Passed

STF

FB

Dark Rates

Comm/other

Gel

FAT 26

Passed

STF

FB

Dark Rates

Comm/other

Gel

During all FATS only small problems with many different components

Solution : repair/replace, re- test

FAT 27

Passed

STF

FB

Dark Rates

Comm/other

Gel

SummaryDOM mass production was running without problems

Production team was well trained but finally “diffusing”

Delivery of components mostly smooth

Storage space sufficient but at the limit, many transports between Zeuthen and Wildau necessary

Many small problems contribute to test failure rate

Total failure rate after rework about 1%, better than expected

DESY finished DOM production in autumn 2008

well in time well in cost estimations