TOTEM Roman Pots Detectors

G. Ruggiero (PH/TOT) TOTEM Week – Labiodola (Elba), May 2010

Jan ’10

Today

• Consolidation works during technical stop.– Reference frames replacement– Low Voltage Distribution– Upgrade of vacuum system and calibration– Roman Pot Motors and movement calibration

• Control commissioning with DCS– Advance/Complete the commissioning of the Detector System– Run and control the system services with DCS

• Readout commissioning with DAQ– Control loop power-up and test (CCUM, DOH…)– FE hardware probing and programming– r/o tests with CalPulse Scans and Sensors ON

• First tests with active trigger– Test of connectivity– Test of the S-bits and CC outputs

• First data taking with active trigger– Latency scan

Activities during first quarter of 2010

2

The overall status of the system is OKnoisy/dead channels in the two stations (only ~1.3% of noisy/dead channels)

The Roman Pot System in IP5

3

-30 C

-28 C

-25 C

Temperature in the 56 far top “pot” in the last 3 weeks

tech.stop

Readout test and data taking

nr_tp nr_hz nr_bt fr_tp fr_hz fr_bt

Sect 45 5.0% 0.1% 0.2% 0.1% 2.6% 0.0%

Sect 56 0.1% 2.9% 5.1% 0.2% 0.0% 0.0%only ~1.3% of bad

channels

1st Technical Interventions in the tunnel (sect. 56)For the first tests of the trigger signals from the RPs, due to a mistake in the initialization, several GOHs were damaged. 16th of March

Problem solved with the replacement of the damaged GOHs done during 3 short accesses 25th of March

All the GOHs are fully functional

2nd Technical Interventions in the tunnel (sect. 45)

Loss of the control Loop in the RP Station 45_220m 9th of AprilProblem isolated during short access with 3 out of 6 “pots” back in the control loop

-for this sector data taking with beam started only on these 3 “pots”

Problem found (faulty connection) and solved during last technical stop 27th of April

Now the whole RP Station 45_220m in the control loop

1st data taking with active trigger

4

Test done the 22nd of April

All “pots” in garage position, data taken with 9 pots out of 12LV1A if at least one candidate track in any of the “pots”(candidate track: coincidence of hits in 3 out of 5 planes & beam)

Beam status: squeezing tests; Fill1055, I(B1)~2*1010 and I(B2)~3*109

Latency scan in steps of 8 clock cycles (VFAT and CC monostables stretched to 8 clock cycles)

• Trigger Rate < 0.1 Hz• For any LVA1 at least one track

Even

ts w

ith h

its in

at l

east

3 p

lane

s (%

)

Latency (clock cycles)

56 far

56 near

45 far

One event in the online monitor (I)Reconstructed Tracks v projection u projection

56 near top

56 near bot.

56 near hor.

One event in the online monitor (II)Reconstructed Tracks v projection u projection

56 near top

56 near bot.

56 near hor.

2nd data taking with active trigger

7

Test done the 17th of MayFill 1107, I(B1) and I(B2)~1.2*1011

All “pots” in garage positionMainly: Latency scan in sector 56>>LV1A if at least one candidate track (one pot per time) (candidate track: coincidence of hits in 3 out of 5 planes & beam) Finer latency scan (VFAT and CC monostables stretched to 4 clock cycles)

8(Plots as in the E-log)

9

10

11

12

13

3rd data taking with active trigger

14

Test done the 19nd of May (from 5.00am to 7,30am)Fill 1112, I(B1) and I(B2)~1.4*1011 Fill 1107

All “pots” in garage position Mainly: Latency scan in sector 45LV1A if at least one candidate track (one pot per time)(candidate track: coincidence of hits in 3 out of 5 planes & beam) VFAT and CC monostables stretched to 4 clock cycles

Latencies vs LV1A distribution

15

LV1A over the Control

Loop

1st 6th

151-153

151-153151-155

153-155

155-157

153-157

151-153

151-153151-155

153-155 153-157

153-157

Preparation of the RPs at 147m

• Preparation of the System/Services– Mainly work in the tunnel

• Cabling testing• Modification of the cooling pipes

• Production of new Detector Packages• Commissioning of the DPs in H8

– Upgrade of the H8 testing facility

18

Work ongoing during the short monthly technical stops

In view of the installation of the stations at 147m for the winter long technical stop (Dec’10/Jan 11).

Production of new Detector Packages or the stations at 147m

19

DP 13th has been assembled/tested >>ready for testbeam

DP 14th has been assembled/tested >>ready for testbeam

DP 15th in assembly

Cicorel is completing the production of the PCBs (delivery announced end of June).

DP 16th < all hybrids with VFATs/Sensors available

Assembly/testing of hybrids continuing...

Upgrade of the RP Testing facility in H8

20

Mechanical assembly with overlap of the sensors from two DPs on the H8 beam axis

Decrease the overall testing time for the next 12 DPs Extend the testing period of each single DP.

beam

Complete the upgrade of H8 by the end of May.

Objective: • DCS Replication of the System in IP5• Overlap two DPs on the beam line to test simultaneously

Useful also for further studies on RPs upgrade

21

Upgrade of H8 (with PH-DT and Vic’s group)

• Cables produced, being laid now• Mechanic support ready (see photo)• Cooling patch panel/pipes in preparation• LV power supply being delivered

(Marathon trailer?)

It will use the TTCci now in that lab (ex) 555,i.e. Motherboard Tests, DAQ tests affected!!!

Summary & OutlookRP detector system is in very good shapeLatency studies finalised for all 12 Pots

Next tests with beam:

Collimator setup with the RPs for absolute position calibration Data taking with RPs inserted

***System/Services in the tunnel for the new Pots in preparation

Production of Detector Packages for the stations at 147m ongoingH8 facility in preparation

22

RP

s @ 220m

RP

s @ 147m