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TBL BPMs: electronics Antoni Gelonch, Yuri Kubyshin, Xavier Millán, Gabriel Montoro CTF3 Collaboration MeetingCERN, January 16-17, 2007 In collaboration.

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Presentation on theme: "TBL BPMs: electronics Antoni Gelonch, Yuri Kubyshin, Xavier Millán, Gabriel Montoro CTF3 Collaboration MeetingCERN, January 16-17, 2007 In collaboration."— Presentation transcript:

1 TBL BPMs: electronics Antoni Gelonch, Yuri Kubyshin, Xavier Millán, Gabriel Montoro CTF3 Collaboration MeetingCERN, January 16-17, 2007 In collaboration with Ángeles Faus-Golfe, Pablo Modesto

2 TBL BPMs: electronics2 BPMs at the TBL ♦ 16 BPMs are planned to be installed at the TBL

3 TBL BPMs: electronics3 H V ∆H ∆V ∑ Inductive pick-up Analog front-end electronics Mechanics IPU electronics Amplifier

4 TBL BPMs: electronics4 General scheme of the analog head electronics Digital (front-end) block Design by M. Gasior

5 TBL BPMs: electronics5 Tentative parameters of the BPMs for the TBL BPM analog bandwidth (BPM with associated electronics) 10 kHz -100 MHz (200 MHz is highly desirable) Beam position range of interest +/-5 mm horizontal and vertical Beam aperture diameter22.5 mm Overall mechanical length< 100 mm Number of BPM’s in TBL 18 Resolution at maximum current <5  m Overall precision <50  m Hans Braun, 24.11.2004 The BPM design for the DBL by M. Gasior cannot be applied directly. Modifications required: a)The dimensions of the BPM (IPU) must be reduced (by a factor of 0.6 approximately) b) The amplifier bandwidth should be broaden up to 200 MHz and attenuator should be added. Typical radiation levels<1000 Gray/year

6 TBL BPMs: electronics6 Work done (I) a) Amplifier design A: schematics, PCB and tests of the 1 channel b) IPU electronics: design and schematics ● Based on a previous design using AD8370. ● Necessary modifications to meet the requirements to the TBL BPMs have been done. ● The IC is not certified to sustain the existing radiation level.

7 TBL BPMs: electronics7 c) Amplifier c) Amplifier design B: PCB routing is in progress (to be finished in 2 weeks). The design accomplishes the following characteristics: –10 kHz -200 MHz bandwidth (to be tested in the lab) –Selectable gain (2 gains) –3 outputs: ΔH, ΔV and Σ –± 2 V output level –Differential or unipolar outputs ??? (TBD) –The amplifier can be used as a analog front-end A new feature: the designed amplifier is able to endure 100 Krads (certified by the IC manufacturer) Work done (II)

8 TBL BPMs: electronics8 Current status Design A  A one-channel prototype has been designed (Design A), built and tested. Required characteristics has been achieved (digitally variable gain and bandwidth up to 750 MHz). Design B  A design of a radiation tolerant version of the amplifier (Design B) has been worked out.  A design of the IPU electronics has been done. The project is carried out with a financial support of the Spanish Ministry of Education and Science.

9 TBL BPMs: electronics9 Schedule ● Build the full version of the amplifier ● Carry out tests of IPU + amplifier - local test - at CERN test bench (?) January-February March-April April-May Many thanks to Louis Bellier, Hans Braun, Steffen Doebert, Domènec Espriu, Marek Gasior, Gunther Geschonke, Lars Soby

10 IPU Electronics

11 TBL BPMs: electronics11 IPU Electronics: schematic

12 TBL BPMs: electronics12

13 TBL BPMs: electronics13

14 TBL BPMs: electronics14

15 Amplifier Electronics

16 TBL BPMs: electronics16 Based on a previous design using AD8370. Prototype A: 1 channel

17 TBL BPMs: electronics17 PCB plot The design has been successfully tested for another application and has shown a good performance. Necessary modifications to meet the requirements to the TBL BPMs have been done. Prototype A: 1 channel

18 TBL BPMs: electronics18 Prototype A: 1 channel Can it endure 100 Krads? …. We need to test it !!!!

19 TBL BPMs: electronics19 Prototype B: 3 channels full schematic

20 TBL BPMs: electronics20 Prototype B: main components Wide-band amplifier IC: THS4508 Positive voltage regulator: RHFL4913 Negative voltage regulator: RHFL7913A ■ All of them sustain 100 Krads according to the manufacturers Note: the full schematic will be available from Gabriel Montoro montoro@tsc.upc.edumontoro@tsc.upc.edu or as a pdf document on the meeting website

21 TBL BPMs: electronics21

22 TBL BPMs: electronics22

23 TBL BPMs: electronics23

24 TBL BPMs: electronics24

25 TBL BPMs: electronics25 We are interested to have a feedback from experts and to cooperate with other groups to validate the developed design B to test the AD8370 IC (design A) under radiation (?) to choose the proper type of: case, connectors and interface (standardization!!!), so that our front-end amplifier can be connected to the digitizer developed by another groups TBD: differential or unipolar outputs

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