Results of dosimeter readings in IR3 and IR7 DGS-RP High Level Dosimetry LHC Collimation WG meeting 03/09/2012.

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Presentation transcript:

Results of dosimeter readings in IR3 and IR7 DGS-RP High Level Dosimetry LHC Collimation WG meeting 03/09/2012

100 RPL dosimeters installed during X-mas stop 2011 in Point 1, 3, 5 and 7 – on the vacuum chamber close to the collimators, warm dipoles and quadrupoles – on the coils of warm dipoles and quadrupoles Exchange and readout of selected dosimeters on 27/06/2012 – Point 1 (6 RPL), – Point 3 (26 RPL) – Point 7 (19 RPL) 03/09/2012 LHC Collimation WG 100 Gy10 5 Gy 10 6 Gy Radio-photoluminescent dosimeter 6mm

Dosimeter positions IR3 left TCP.6L3.B1 MQWA.E5L3MQWA.C5L3 TCSG.5L3.B1 MBW.C6L3 1213m to IP  Beam1  Beam 2  Dosimeter positions mirrored on the right side of IP 03/09/2012 LHC Collimation WG

Dosimeter positions IR7 left Beam1  Beam 2  1180m to IP  TCP.B6L7.B1 MQWA.E5L7 TCSG.A6L7.B1MBW.B6L7 Dosimeter positions mirrored on the right side of IP 03/09/2012 LHC Collimation WG

Dosimeter position on collimators Dosimeters were attached to the vacuum chamber at approximately 2 cm far from the collimator end plate (P. Thonet) Representative picture, not real location 03/09/2012 LHC Collimation WG

Dosimeter position on dipoles Representative picture, not real location 03/09/2012 LHC Collimation WG

Dosimeter position on quadrupoles Representative picture, not real location 03/09/2012 LHC Collimation WG

IR3 – dose to TCP and D3 D4 D3 Q5 TCPTCSG 8.6kGy 3.1 kGy D4D3 Q5 TCPTCSG 15.7 kGy 6.3 kGy 18.0 kGy 9.2 kGy 4.4 kGy 5.5 kGy 2.3 kGy 03/09/2012 LHC Collimation WG

IR3 – dose to Q5 (E) D4 D3 Q5 TCPTCSGD4D3 Q5 TCPTCSG 81.7 kGy 1.3 kGy 2.3 kGy kGy 8.0 kGy 1.6 kGy 6.7 kGy 03/09/2012 LHC Collimation WG

IR3 – dose to TCSG and Q5 (C) D4 D3 Q5 TCPTCSG 3.5 kGy 4.2 kGy D4D3 Q5 TCPTCSG 14.3 kGy 18.8 kGy 2.4 kGy 1.6 kGy 2.7 kGy 6.6 kGy 31.0 kGy kGy not exchanged 03/09/2012 LHC Collimation WG

IR7 – dose to TCP and D3 D4 D3 Q5 TCPTCSG kGy kGy> 500 kGy kGy kGy Q5 D3 D4 TCP TCSG kGy kGy297.4 kGy kGy > 500 kGy 03/09/2012 LHC Collimation WG

IR7 – dose to TCSG and Q5 D4 D3 Q5 TCPTCSG kGy Q5 D3 D4 TCP TCSG kGy > 500 kGy 43.7 kGy 19.1 kGy fallen off (487.3 kGy) 25.7 kGy kGy 59.6 kGy 03/09/2012 LHC Collimation WG

Summary IR3 and IR7 IR 3 leftright IR7 leftright TCP8.6 kGy3.1 kGy302.1 kGy> 500 kGy MWB6.3 – 18 kGy2.3 – 5.5 kGy > 500 kGy297.4 – kGy TCSG3.5 kGy4.2 kGy297.4 kGy478.2 kGy MQWA.E1.6 – kGy1.3 – 81.7 kGy25.7 – kGy > 500 kGy MQWA.C2.7 – kGy 1.6 – 18.8 kGy 03/09/2012 LHC Collimation WG

Dose values Point kGy kGy kGy 4.9 kGy 3.9 kGy 26.5 kGy first magnet after inner triplets and feedbox 03/09/2012 LHC Collimation WG