ATLAS SCT Testbeam : May 2002

ATLAS SCT Testbeam

May/June 2002 beamtest at CERN H8

Beamtest aimed at detailed measurements of SCT endcap modules for the Endcap Module FDR.

Offline Analysis and Preliminary Results (Valencia group)

News

31/5/2002 First beam runs. Start reference threshold scan at nominal bias (150/350V) and normal incidence.
31/5/2002 Morning. Finish in-situ calibrations of unirradiated modules. Still concerned that the irradiated modules have a noise tail. Try setting LV3 ground jumpers to VME chassis direct - no change. Cannot continue noise investigations due to beam.
Overnight, Monica working on re-characterising all modules. New trims for the irrads.
30/5/2002 Working hard on cooling the irradiated modules (K5_305, K5_308). Add a third Huber chiller dedicated to cooling the two irradiated modules. Eventually decide to add more grease to the main contact, and put some grease on the end contact which had none. Modules now thermally stable to 350V, but very sensitive to environment temperature.
30/5/2002 Heinz decides to remove KB_102 due to noise tail and replace it with KB_103
29/5/2002 All modules now operating. System cooled to -12 environment. The two irradiated K5's are running away at around 300V. Noise tails on some modules.
29/5/2002 Last of the 11 modules installed in the H8 environment chamber.
29/5/2002 Inner Module K5_304 arrived from NIKHEF and prepared in modified Valencia box
29/5/2002 Irradiated K5 Outer modules transported from B186 and installed in beamtest. In-situ characterisation including re-trimming.
Mon 27/5/2002 8 Modules are installed and running (0035,0046,k5_310,k5_312,k5_301,k5_302,kb_100,kb_102)
Mon 27/5/2002 The 2 irradiated modules are being tested at the B186 electrical stand

Schedule : 27 May - 12 June, possibly extending to 18 June

Installation in Beamline: Friday 24 May to Sunday 26 May
Start of Beam: 08:00 Monday 27 May (** Note unusual day **) (parasitic on Pixels)
Running: 27 May to 12 June. 6-12 June intermittent running (parasitic on Tiles)
Possible extension of run 12-18 June (during SCT week) only if necessary

Modules

DAQ ID	Slot	Name	Type	Irrad?	From/Contact	Comment
10	0	K5-304	K5 Inner	No	NIKHEF/Fred	Arriving Wed
9	1	K5-302	K5 Outer	No	Manchester/Steve
8	2	K5-305*	K5 Outer	Yes	Freiburg/Paul	\The modules from the
7	3	K5-308*	K5 Outer	Yes	Freiburg/Paul	/ May irradiation
6	4	K5-310	K5 Outer	No	CERN-GE/Didier	\Two modules from the
5	5	K5-312	K5 Outer	No	CERN-GE/Didier	/ Miniproduction
4	6	KB-102/3	KB	No	CERN-GE/Monica
3	7	KB-100	KB	No	CERN-GE/Monica
2	8	K5-301	K5 Middle	No	MPI? / Rainer	See Steve's mail re bias limit
1	9	0046	Barrel	No	Systemtest/Jo	For comparison
0	10	0035	Barrel	No	Systemtest/Jo	Fixed threshold, for reference

Note: Module 0046 is a barrel module which will undergo all the same scans as the endcap modules, thus acting as a comparison reference. Module 0035 is mounted in a fixed, non-rotating, position on the back wall of the chamber. It will be kept at fixed bias, angle and threshold to act as an efficiency reference.

Module setup details & cabling


As at 29/5/2002 18:00
                                    
Slot	DAQ	Name		S/C	LVCable	Sig Cable

10	0	0035 (B)	16	26	0
9	1	0046 (B)	21	24	1
8	2	k5_301 (M)	22	21	12
7	3	kb_100 (kb)	3	22	3
6	4	kb_102/3 (kb)	120	23	14
5	5	k5_312 (O)	25	25	5
4	6	k5_310 (O)	26	20	20
3	7	k5_308 (*O)	52	0	11
2	8	k5_305 (*O)	53	1	13
1	9	k5_302 (O)	30	27	17
0	10	k5_304 (I)	159	2	15

Program

Comments or suggestions to the program are invited.

Nominal conditions: Edge ON; Bias 150V (unirrad.), 350V (irrad.), Normal incidence, Magnet off

Scan macro: TBBiasPoint(Vunirrad, Virrad) takes 7500 events per threshold ecept for high statistics points of 25000 events at 0.9, 1.1 and 3.0 fC.

Threshold (set in fC according to current .RCDAT files) scanned at each of the following points:
Edge ON Bias Points
A Reference scan at nominal conditions Preliminary timing check and alignments
B TBBiasPoint(100,300) Trigger busy problem - inefficient telescope
C TBBiasPoint(75,250) Not completed; trigger busy problem.
D TBBiasPoint(200,400)
E TBBiasPoint(250,450)
F TBSetBias(150,450); TBSpecial(20000) Nominal conditions: high stats on all points
G TBBiasPoint(350,325)
H TBBiasPoint(300,375)
B2 TBBiasPoint(100,300) Repeat B
C2 TBBiasPoint(75,250) Repeat C
Edge OFF Bias Points
I TBSetBias(150,450); TBSpecial(20000) Nominal conditions: high stats on all points
J TBBiasPoint(250,450)
K TBBiasPoint(100,350)
L TBBiasPoint(200,400)
Position Points
M TBBiasPoint(150,350); Position 2
N TBBiasPoint(150,350); Position 3
O TBBiasPoint(150,350); Position 4
P TBBiasPoint(125,325); Position 1
Q TBBiasPoint(125,325); Position 1 Repeat P
R TBBiasPoint(50,200); Position 1
S TBSetBias(150,350); Position 1; TBSpecial(10000)
T TBSetBias(150,350); Position 2; TBSpecial(10000)
U TBSetBias(150,350); Position 1; TBSpecial(10000)
V TBBiasPoint(150,350); Position 2
15mm Angle points (position 1)
W TBSetBias(150,350); TBSpecial(10000) Muon
X TBSetBias(150,350); TBSpecial(10000) Pion
Bias scan at 0.9fC (23 mm, position 1)
Y TBRun(5000)

Participants

Please advise if you wish to be included as a participant, with an indication of the dates when you could sit shifts.


              May                        June
              23 24 25 26 27 28 29 30 31 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 
              Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We Th Fr Sa Su Mo Tu We

Install          ########       #                     ###                 #
Run                       *****************************   *  *  *  *  *  * ????????????????????

Gareth         |-----------------------------------------------------------|
Gaby Bright    |-------------------------------------------------------------------------------->
Sandor Kazi                                              |-------------------------------------->

Marcel Vos                |------------------------------------------------|
Jose Enrique Garcia N.    |------------------------------------------------|

Zdenek            |--------------------------------------|
Peter Kodys       |--------------------------------------------------------|
Pavel Reznicek    |--------------------------------------------------------|

Rainer Wallny  <-----------------------------------------------------------|
Monica D'Onofrio <-----------------------|      |--------------------------|
Mauro Donega <-------------------------------------------------------------|
Pamela Ferrari <-----------------------------------------------------------|

Matt Warren       |----------------------|         |-----------------------|

Shifts

Please mail me with your preferred slots. We are now especially in need of volunteers for the nights in the second week.



                  Night (00 - 08)     Day (08 - 16)     Evening (16 - 24)

                  (2 people)          (1 person)        (1 person)


  Wed 29/5        XXXXXXXXXXXXXXX        all               all
  
  Thu 30/5        Pavel & Matt        Gareth & Gaby     Zdenek

  Fri 31/5        Peter & Monica      Pamela            Pavel & Mauro

  Sat 01/6        Zdenek & Matt       Gareth & Marcel   Mauro

  Sun 02/6        Marcel & Jose-E     Peter             Zdenek

  Mon 03/6        Gaby & Pavel        Monica            Marcel & Jose-E

  Tue 04/6        CANCELLED           Gaby              Monica & Mariane

  Wed 05/6        Marcel & Jose-E     Rainer            Gareth & Gaby
                                      [Tiles Install 08:00 Wednesday]

  Thu 06/6        Matt  & Gaby        XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

  Fri 07/6        Monica & Rainer     XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

  Sat 08/6        Pamela & Sandor     XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

  Sun 09/6        Peter &             XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

  Mon 10/6        Sandor & Gaby       XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

  Tue 11/6        Marcel & Jose-E   [06:00 - 08:00 SCT Removal of all equipment from beamline]