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

Results of dosimeter readings in IR3 and IR7

DGS-RP High Level Dosimetry

LHC Collimation WG meeting03/09/2012

LHC Collimation WG

• 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

100 Gy 105 Gy 106 Gy

Radio-photoluminescent dosimeter6mm

LHC Collimation WG

Dosimeter positions IR3 left

TCP.6L3.B1

MQWA.E5L3 MQWA.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 IP03/09/2012

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 location03/09/2012

LHC Collimation WG

Dosimeter position on dipoles

Representative picture, not real location03/09/2012

LHC Collimation WG

Dosimeter position on quadrupoles

Representative picture, not real location03/09/2012

LHC Collimation WG

IR3 – dose to TCP and D3

D4 D3 Q5 TCPTCSG

8.6kGy 3.1 kGy

D4D3Q5

TCP TCSG

15.7 kGy

6.3 kGy

18.0 kGy

9.2 kGy4.4 kGy

5.5 kGy2.3 kGy

03/09/2012

LHC Collimation WG

IR3 – dose to Q5 (E)

D4 D3 Q5 TCPTCSG D4D3Q5

TCP TCSG

81.7 kGy

1.3 kGy 2.3 kGy

297.4 kGy8.0 kGy

1.6 kGy6.7 kGy

03/09/2012

LHC Collimation WG

IR3 – dose to TCSG and Q5 (C)

D4 D3 Q5 TCPTCSG

3.5 kGy 4.2 kGy

D4D3Q5

TCP TCSG

14.3 kGy18.8 kGy

2.4 kGy1.6 kGy2.7 kGy 6.6 kGy

31.0 kGy103.9 kGynot exchanged

03/09/2012

LHC Collimation WG

IR7 – dose to TCP and D3

D4 D3 Q5

TCP TCSG

397.5 kGy

119.8 kGy > 500 kGy

106.3 kGy

302.1 kGy

Q5 D3 D4

TCPTCSG

487.3 kGy

469.1 kGy 297.4 kGy

329.4 kGy

> 500 kGy

03/09/2012

LHC Collimation WG

IR7 – dose to TCSG and Q5

D4 D3 Q5

TCP TCSG

297.4 kGy

Q5 D3 D4

TCPTCSG

478.2 kGy

> 500 kGy

43.7 kGy19.1 kGy

fallen off(487.3 kGy)

25.7 kGy

100.4 kGy

59.6 kGy

03/09/2012

LHC Collimation WG

Summary IR3 and IR7

IR 3left right

IR7left right

TCP 8.6 kGy 3.1 kGy 302.1 kGy > 500 kGy

MWB 6.3 – 18 kGy 2.3 – 5.5 kGy 106.3 - > 500 kGy 297.4 – 487.3 kGy

TCSG 3.5 kGy 4.2 kGy 297.4 kGy 478.2 kGy

MQWA.E 1.6 – 297.4 kGy 1.3 – 81.7 kGy 25.7 – 487.3 kGy 19.1 - > 500 kGy

MQWA.C 2.7 – 103.9 kGy 1.6 – 18.8 kGy

03/09/2012

LHC Collimation WG

Dose values Point 1

252.7 kGy

289.7 kGy171.8 kGy

4.9 kGy 3.9 kGy

26.5 kGy

first magnet after inner triplets and feedbox

03/09/2012