RPC Readiness for installation New shorter service block has been built. But changing it on the installed chambers was very difficult: in both chambers we broke the gas inlet -Chamber in Sector 10 already replaced (last week). -Chamber in sector 4 to be replaced in April. 4 149 153 150 154 Integration problem 5 142 3 105 108 155 Sector 4 and 10 interference between cable tray and RPC service block 114 141 115 280 157 - 116 269 113 - 283 282 275 44 140 268 6 38 32 144 17 41 41 112 34 2 139 36 8 281 - 270 279 145 43 267 223 48 110 33 out 3 bi gap W +2 184 175 187 138 - 86 59 198 60 109 106 137 63 183 12 8 174 107 111 179 177 180 151 56 152 - 186 82 64 102 65 83 117 - 62 100 118 133 134 103 104 9 - 11 - 123 124 10 Ready for installation Under test Installed Not at ISR

W+2 Production and test : W+2 Production Accept. Italy-Sophia At ISR. Ready for Installation RB4 1 cham. sect.8 (To replace sect. 4) Done March. March April Cham 123 (sect. 10 ) and cham 150 (sect. 4) will be repaired at ISR end of April.

Missing chambers arrive at CERN on 16 March ISR Status: W+1 5 3 146 Sector 4 (chimney). RB2-RB3 at ISR: 21 March RB4-RB1. Assembling in March 05. RB1 Missing chambers arrive at CERN on 16 March RB4 Missing RB4 Under test in Bari. 148 204 18 - 206 76 73 21 - 90 88 143 6 222 225 219 291 31 2 234 273 75 91 87 - 220 221 156 20 224 227 226 3 bi gap out W +1 194 172 182 - 119 39 205 49 67 71 164 52 162 12 27 190 203 202 47 211 235 46 66 - 210 35 93 80 207 53 68 101 - 51 218 10 129 97 130 - 11 - 126 125 10 Under test To be tested Ready for installation Not at ISR

Production and test : W+1 Accept. Italy-Sophia At ISR. Ready RB2 done Sect 6 End of March RB1 3 cham: Sect 5-11-12 March 3 cham Sect 5-11-12 16 March Middle April RB3 1 cham. 21 March Chimney Sect 4 Feb 05 RB3-RB2 March 05 RB4-RB1 March RB3-RB2 April RB4-RB1 21 March End April Middle April Middle May RB4 4 cham: sect 3-5 -6 March April

RB1 3 missing chambers under test in Pavia 4 ISR Status: W0+ 5 3 209 RB1 3 missing chambers under test in Pavia RB3 4 missing chambers at ISR on 21 March RB4 missing RB4 to be tested in Bari - 208 - 274 284 6 122 233 2 169 168 236 11 74 278 271 - 277 16 192 232 Z (+) Face 3 bi gap out W 0 - 12 8 191 188 173 - 95 81 94 99 - 79 132 9 - 11 160 - 158 10 Under test To be tested Ready for installation Not at ISR

Production and test : W0+ Accept. Italy-Sophia Expected At ISR. Ready RB2 Done done Middle May RB1 3 cham. sect 6-10 April End of April . End of May RB3 21 March Middle April RB4 4 cham. sect 2 -3 May End of June

ISR STATUS: W-1 /W-2 sect 10-11 61 290 - 85 3 bi gap 131 201 11 - 161 159 RB1 3 chambers to be built + 4 under test in Pavia RB2 1 chamber to be built RB3 4 chamber under test in Italy RB4 2 chambers to be repaired 10 W -1 Z (-) Face 189 72 54 70 3 bi gap 285 55 288 163 - 128 123 11 Under test 10 To be tested Ready for installation Not at ISR

Production and test :W-1/W-2 Set 10/11 Production Accepted Italy-Sophia Expected at ISR. Ready RB2 1 cham April May June July RB1 3 cham. RB3 done RB4 To be repaired

RPC readiness vs DT schedule: W+2/W+1/W0+ Coupling - Installation W+1 36 DT All chamber but S1/ S 7 and MB4To W0+ 18 DT All but MB4To Middle of May W+2 6 MB4 S 3-5-9-10-11 Ready 9 MB4To W0+ W+1 End of June 3 MB4 W0 + 6 MB4To W+1 18 DT W-1 W-2 S 10/ S11 July RB1s under test. Ready middle of April. Chimney RB2-RB3 ready middle April Chimney RB1-RB4 ready middle May 11 April – 6 May 30 May – 17 June 4 July – 22 July 5 Aug- 23 Aug

Production and test status : W0- 4 3 - - 5 170 333 - 89 2 229 6 236 Z (-) Face 3 bi gap out W 0 231 40 1 96 92 165 - 84 78 166 12 12 8 6 - 212 213 93 289 - 292 9 Under test 11 - To be tested 10 Ready for installation Not at ISR

Production and test : W0- Accept. Italy-Sophia Expected At ISR. Ready RB2 2 cham. Sect 4-9 April May July Aug.-Sept RB1 7 cham: May June 05 Aug-Sept RB3 3 cham. April RB4 done April June

Production and test : W-2/W-1 Very preliminary W-2/W-1 All Production Ready RB2 Start March End ‘05 /Beg ‘06 RB1 Start April RB3 Start Feb RB4